/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:32:23,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:32:23,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:32:23,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:32:23,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:32:23,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:32:23,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:32:23,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:32:23,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:32:23,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:32:23,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:32:23,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:32:23,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:32:23,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:32:23,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:32:23,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:32:23,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:32:23,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:32:23,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:32:23,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:32:23,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:32:23,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:32:23,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:32:23,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:32:23,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:32:23,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:32:23,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:32:23,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:32:23,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:32:23,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:32:23,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:32:23,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:32:23,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:32:23,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:32:23,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:32:23,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:32:23,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:32:23,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:32:23,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:32:23,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:32:23,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:32:23,729 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 04:32:23,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:32:23,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:32:23,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:32:23,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:32:23,783 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:32:23,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:32:23,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:32:23,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:32:23,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:32:23,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:32:23,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:32:23,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:32:23,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:32:23,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:32:23,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:32:23,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:32:23,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:32:23,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:32:23,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:32:23,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:32:23,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:32:23,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:32:23,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:32:23,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:32:23,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:32:23,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:32:23,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:32:23,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:32:23,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:32:23,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:32:24,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:32:24,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:32:24,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:32:24,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:32:24,145 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:32:24,146 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-22 04:32:24,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56156792d/af94a6c7a26b4e9294ceca747f537276/FLAG091a5619e [2020-08-22 04:32:24,774 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:32:24,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-22 04:32:24,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56156792d/af94a6c7a26b4e9294ceca747f537276/FLAG091a5619e [2020-08-22 04:32:25,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56156792d/af94a6c7a26b4e9294ceca747f537276 [2020-08-22 04:32:25,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:32:25,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:32:25,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:32:25,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:32:25,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:32:25,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:32:25" (1/1) ... [2020-08-22 04:32:25,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:25, skipping insertion in model container [2020-08-22 04:32:25,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:32:25" (1/1) ... [2020-08-22 04:32:25,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:32:25,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:32:25,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:32:25,601 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:32:25,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:32:25,724 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:32:25,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:25 WrapperNode [2020-08-22 04:32:25,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:32:25,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:32:25,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:32:25,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:32:25,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:25" (1/1) ... [2020-08-22 04:32:25,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:25" (1/1) ... [2020-08-22 04:32:25,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:25" (1/1) ... [2020-08-22 04:32:25,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:25" (1/1) ... [2020-08-22 04:32:25,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:25" (1/1) ... [2020-08-22 04:32:25,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:25" (1/1) ... [2020-08-22 04:32:25,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:25" (1/1) ... [2020-08-22 04:32:25,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:32:25,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:32:25,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:32:25,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:32:25,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:25" (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 04:32:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:32:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:32:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:32:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:32:25,872 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:32:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:32:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:32:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:32:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 04:32:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:32:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:32:25,873 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:32:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:32:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:32:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:32:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:32:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 04:32:25,874 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:32:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:32:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:32:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:32:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:32:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:32:25,875 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:32:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:32:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:32:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:32:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:32:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:32:25,876 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:32:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:32:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 04:32:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 04:32:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:32:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:32:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:32:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:32:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:32:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:32:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:32:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:32:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:32:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:32:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:32:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:32:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:32:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:32:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:32:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:32:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:32:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:32:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:32:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:32:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:32:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:32:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:32:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:32:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:32:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:32:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:32:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 04:32:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:32:25,881 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:32:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:32:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:32:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 04:32:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:32:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:32:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:32:25,882 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:32:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 04:32:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:32:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:32:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:32:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:32:25,883 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 04:32:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:32:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:32:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:32:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:32:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:32:25,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:32:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:32:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:32:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:32:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:32:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:32:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:32:25,885 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:32:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:32:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:32:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:32:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:32:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:32:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:32:25,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:32:26,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:32:26,979 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:32:26,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:32:26 BoogieIcfgContainer [2020-08-22 04:32:26,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:32:26,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:32:26,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:32:26,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:32:26,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:32:25" (1/3) ... [2020-08-22 04:32:26,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b84120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:32:26, skipping insertion in model container [2020-08-22 04:32:26,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:25" (2/3) ... [2020-08-22 04:32:26,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b84120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:32:26, skipping insertion in model container [2020-08-22 04:32:26,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:32:26" (3/3) ... [2020-08-22 04:32:26,997 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2020-08-22 04:32:27,008 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:32:27,016 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:32:27,030 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:32:27,055 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:32:27,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:32:27,055 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:32:27,055 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:32:27,055 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:32:27,056 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:32:27,056 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:32:27,056 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:32:27,084 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-22 04:32:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 04:32:27,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:27,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:27,102 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:27,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:27,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1091923628, now seen corresponding path program 1 times [2020-08-22 04:32:27,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:27,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239987576] [2020-08-22 04:32:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:27,814 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:27,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:27,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:27,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:27,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:32:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:27,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:32:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:27,909 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 04:32:27,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239987576] [2020-08-22 04:32:27,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:27,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:32:27,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215813868] [2020-08-22 04:32:27,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:32:27,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:27,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:32:27,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:32:27,939 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-08-22 04:32:29,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:29,168 INFO L93 Difference]: Finished difference Result 311 states and 407 transitions. [2020-08-22 04:32:29,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:32:29,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 04:32:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:29,185 INFO L225 Difference]: With dead ends: 311 [2020-08-22 04:32:29,186 INFO L226 Difference]: Without dead ends: 168 [2020-08-22 04:32:29,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:32:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-22 04:32:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-22 04:32:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-22 04:32:29,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-22 04:32:29,280 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-08-22 04:32:29,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:29,280 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-22 04:32:29,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:32:29,281 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-22 04:32:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 04:32:29,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:29,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:29,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:32:29,285 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:29,286 INFO L82 PathProgramCache]: Analyzing trace with hash 644500822, now seen corresponding path program 1 times [2020-08-22 04:32:29,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:29,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513053284] [2020-08-22 04:32:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:29,698 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:29,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:29,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:29,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:29,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:32:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:29,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:32:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:29,744 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 04:32:29,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513053284] [2020-08-22 04:32:29,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:29,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:32:29,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999485306] [2020-08-22 04:32:29,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:32:29,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:29,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:32:29,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:32:29,749 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2020-08-22 04:32:30,173 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:31,095 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-22 04:32:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:32:31,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 04:32:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:31,101 INFO L225 Difference]: With dead ends: 238 [2020-08-22 04:32:31,102 INFO L226 Difference]: Without dead ends: 152 [2020-08-22 04:32:31,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:32:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-22 04:32:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2020-08-22 04:32:31,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-22 04:32:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-08-22 04:32:31,144 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-08-22 04:32:31,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:31,145 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-08-22 04:32:31,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:32:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-08-22 04:32:31,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 04:32:31,147 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:31,147 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 04:32:31,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:32:31,148 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:31,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:31,148 INFO L82 PathProgramCache]: Analyzing trace with hash -350015351, now seen corresponding path program 1 times [2020-08-22 04:32:31,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:31,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271614153] [2020-08-22 04:32:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:31,474 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:31,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:31,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:31,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:31,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:31,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:31,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:32:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:31,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:32:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:31,623 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 04:32:31,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271614153] [2020-08-22 04:32:31,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:31,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:32:31,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418137176] [2020-08-22 04:32:31,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:32:31,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:31,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:32:31,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:32:31,633 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2020-08-22 04:32:32,034 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:32,363 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:32,627 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:32,863 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:33,653 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:35,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:35,442 INFO L93 Difference]: Finished difference Result 427 states and 530 transitions. [2020-08-22 04:32:35,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:32:35,443 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 04:32:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:35,449 INFO L225 Difference]: With dead ends: 427 [2020-08-22 04:32:35,450 INFO L226 Difference]: Without dead ends: 326 [2020-08-22 04:32:35,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 04:32:35,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-22 04:32:35,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-22 04:32:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-22 04:32:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 324 transitions. [2020-08-22 04:32:35,532 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 324 transitions. Word has length 51 [2020-08-22 04:32:35,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:35,533 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 324 transitions. [2020-08-22 04:32:35,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:32:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 324 transitions. [2020-08-22 04:32:35,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 04:32:35,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:35,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:35,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:32:35,537 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:35,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:35,537 INFO L82 PathProgramCache]: Analyzing trace with hash -103520613, now seen corresponding path program 1 times [2020-08-22 04:32:35,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:35,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444275234] [2020-08-22 04:32:35,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:35,887 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:35,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:35,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:35,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:35,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:35,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:35,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:32:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:35,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:32:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:35,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:32:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:36,000 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 04:32:36,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444275234] [2020-08-22 04:32:36,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:36,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:32:36,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336167710] [2020-08-22 04:32:36,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:32:36,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:36,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:32:36,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:32:36,002 INFO L87 Difference]: Start difference. First operand 268 states and 324 transitions. Second operand 12 states. [2020-08-22 04:32:36,501 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:36,819 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:37,077 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:37,325 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:37,893 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:38,768 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:39,197 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:39,565 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:39,814 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:32:40,080 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:40,491 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:40,889 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:41,245 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:42,869 INFO L93 Difference]: Finished difference Result 1081 states and 1492 transitions. [2020-08-22 04:32:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 04:32:42,869 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 04:32:42,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:42,884 INFO L225 Difference]: With dead ends: 1081 [2020-08-22 04:32:42,887 INFO L226 Difference]: Without dead ends: 837 [2020-08-22 04:32:42,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 04:32:42,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-08-22 04:32:43,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 744. [2020-08-22 04:32:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-08-22 04:32:43,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 950 transitions. [2020-08-22 04:32:43,086 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 950 transitions. Word has length 57 [2020-08-22 04:32:43,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:43,086 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 950 transitions. [2020-08-22 04:32:43,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:32:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 950 transitions. [2020-08-22 04:32:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 04:32:43,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:43,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:43,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:32:43,094 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:43,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:43,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1065334495, now seen corresponding path program 1 times [2020-08-22 04:32:43,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:43,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265296786] [2020-08-22 04:32:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,365 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:43,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:32:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:32:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:32:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 04:32:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,455 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 04:32:43,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265296786] [2020-08-22 04:32:43,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:43,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:32:43,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165372333] [2020-08-22 04:32:43,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:32:43,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:43,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:32:43,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:32:43,459 INFO L87 Difference]: Start difference. First operand 744 states and 950 transitions. Second operand 6 states. [2020-08-22 04:32:43,819 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:45,629 INFO L93 Difference]: Finished difference Result 1779 states and 2437 transitions. [2020-08-22 04:32:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 04:32:45,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 04:32:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:45,637 INFO L225 Difference]: With dead ends: 1779 [2020-08-22 04:32:45,638 INFO L226 Difference]: Without dead ends: 1059 [2020-08-22 04:32:45,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:32:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-08-22 04:32:45,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 972. [2020-08-22 04:32:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-08-22 04:32:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1232 transitions. [2020-08-22 04:32:45,827 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1232 transitions. Word has length 61 [2020-08-22 04:32:45,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:45,827 INFO L479 AbstractCegarLoop]: Abstraction has 972 states and 1232 transitions. [2020-08-22 04:32:45,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:32:45,828 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1232 transitions. [2020-08-22 04:32:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 04:32:45,832 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:45,833 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:45,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:32:45,833 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:45,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:45,834 INFO L82 PathProgramCache]: Analyzing trace with hash 380759586, now seen corresponding path program 1 times [2020-08-22 04:32:45,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:45,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102089664] [2020-08-22 04:32:45,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,121 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:46,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:32:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:32:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:32:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:32:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:32:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:32:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 04:32:46,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102089664] [2020-08-22 04:32:46,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:46,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:32:46,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870278310] [2020-08-22 04:32:46,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:32:46,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:46,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:32:46,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:32:46,349 INFO L87 Difference]: Start difference. First operand 972 states and 1232 transitions. Second operand 10 states. [2020-08-22 04:32:47,004 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 04:32:47,574 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:49,379 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:51,143 INFO L93 Difference]: Finished difference Result 1881 states and 2481 transitions. [2020-08-22 04:32:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 04:32:51,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 04:32:51,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:51,153 INFO L225 Difference]: With dead ends: 1881 [2020-08-22 04:32:51,153 INFO L226 Difference]: Without dead ends: 1176 [2020-08-22 04:32:51,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 04:32:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-08-22 04:32:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1079. [2020-08-22 04:32:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-08-22 04:32:51,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1343 transitions. [2020-08-22 04:32:51,382 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1343 transitions. Word has length 88 [2020-08-22 04:32:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:51,384 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1343 transitions. [2020-08-22 04:32:51,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:32:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1343 transitions. [2020-08-22 04:32:51,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 04:32:51,389 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:51,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:51,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:32:51,390 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:51,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:51,391 INFO L82 PathProgramCache]: Analyzing trace with hash 605263964, now seen corresponding path program 1 times [2020-08-22 04:32:51,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:51,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459813981] [2020-08-22 04:32:51,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,612 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:51,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:32:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:32:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 04:32:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 04:32:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:32:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 04:32:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 04:32:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 04:32:51,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459813981] [2020-08-22 04:32:51,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:51,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:32:51,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50789292] [2020-08-22 04:32:51,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:32:51,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:51,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:32:51,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:32:51,800 INFO L87 Difference]: Start difference. First operand 1079 states and 1343 transitions. Second operand 10 states. [2020-08-22 04:32:53,196 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:53,440 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:32:53,689 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:53,944 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:54,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:54,975 INFO L93 Difference]: Finished difference Result 2275 states and 2959 transitions. [2020-08-22 04:32:54,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:32:54,980 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-08-22 04:32:54,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:54,989 INFO L225 Difference]: With dead ends: 2275 [2020-08-22 04:32:54,989 INFO L226 Difference]: Without dead ends: 1220 [2020-08-22 04:32:54,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:32:54,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-22 04:32:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1109. [2020-08-22 04:32:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-08-22 04:32:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1377 transitions. [2020-08-22 04:32:55,221 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1377 transitions. Word has length 128 [2020-08-22 04:32:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:55,221 INFO L479 AbstractCegarLoop]: Abstraction has 1109 states and 1377 transitions. [2020-08-22 04:32:55,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:32:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1377 transitions. [2020-08-22 04:32:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-22 04:32:55,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:55,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:55,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:32:55,226 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:55,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:55,226 INFO L82 PathProgramCache]: Analyzing trace with hash 845503710, now seen corresponding path program 1 times [2020-08-22 04:32:55,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:55,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215077335] [2020-08-22 04:32:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,506 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:55,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:32:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:32:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 04:32:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 04:32:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:32:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 04:32:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 04:32:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 04:32:55,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215077335] [2020-08-22 04:32:55,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:55,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:32:55,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173298022] [2020-08-22 04:32:55,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:32:55,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:55,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:32:55,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:32:55,822 INFO L87 Difference]: Start difference. First operand 1109 states and 1377 transitions. Second operand 12 states. [2020-08-22 04:32:56,637 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:56,876 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:57,107 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:57,753 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:58,014 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:58,238 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:59,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:59,298 INFO L93 Difference]: Finished difference Result 2085 states and 2667 transitions. [2020-08-22 04:32:59,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:32:59,303 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-22 04:32:59,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:59,308 INFO L225 Difference]: With dead ends: 2085 [2020-08-22 04:32:59,309 INFO L226 Difference]: Without dead ends: 1000 [2020-08-22 04:32:59,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:32:59,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2020-08-22 04:32:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 944. [2020-08-22 04:32:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2020-08-22 04:32:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1148 transitions. [2020-08-22 04:32:59,522 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1148 transitions. Word has length 128 [2020-08-22 04:32:59,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:59,522 INFO L479 AbstractCegarLoop]: Abstraction has 944 states and 1148 transitions. [2020-08-22 04:32:59,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:32:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1148 transitions. [2020-08-22 04:32:59,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 04:32:59,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:59,526 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:59,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:32:59,526 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:59,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:59,527 INFO L82 PathProgramCache]: Analyzing trace with hash -2030061671, now seen corresponding path program 1 times [2020-08-22 04:32:59,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:59,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208388842] [2020-08-22 04:32:59,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,783 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:59,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:32:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:32:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:32:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 04:32:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 04:32:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:32:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 04:32:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 04:32:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 04:32:59,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208388842] [2020-08-22 04:32:59,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:59,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:32:59,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311349486] [2020-08-22 04:32:59,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:32:59,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:59,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:32:59,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:32:59,927 INFO L87 Difference]: Start difference. First operand 944 states and 1148 transitions. Second operand 10 states. [2020-08-22 04:33:01,434 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:33:01,658 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:33:01,888 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:33:02,112 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:33:02,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:33:02,496 INFO L93 Difference]: Finished difference Result 1797 states and 2242 transitions. [2020-08-22 04:33:02,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 04:33:02,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-22 04:33:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:33:02,503 INFO L225 Difference]: With dead ends: 1797 [2020-08-22 04:33:02,504 INFO L226 Difference]: Without dead ends: 1032 [2020-08-22 04:33:02,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:33:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-08-22 04:33:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 976. [2020-08-22 04:33:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-08-22 04:33:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1182 transitions. [2020-08-22 04:33:02,770 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1182 transitions. Word has length 132 [2020-08-22 04:33:02,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:33:02,773 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1182 transitions. [2020-08-22 04:33:02,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:33:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1182 transitions. [2020-08-22 04:33:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 04:33:02,779 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:33:02,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:33:02,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:33:02,780 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:33:02,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:33:02,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1755432535, now seen corresponding path program 1 times [2020-08-22 04:33:02,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:33:02,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96275230] [2020-08-22 04:33:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:33:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,081 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:33:03,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:33:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:33:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:33:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:33:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:33:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:33:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:33:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:33:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 04:33:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 04:33:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:33:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 04:33:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 04:33:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 04:33:03,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96275230] [2020-08-22 04:33:03,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:33:03,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:33:03,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740071504] [2020-08-22 04:33:03,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:33:03,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:33:03,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:33:03,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:33:03,245 INFO L87 Difference]: Start difference. First operand 976 states and 1182 transitions. Second operand 10 states. [2020-08-22 04:33:03,810 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:05,395 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:05,690 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:05,932 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:06,171 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:06,438 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:33:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:33:06,871 INFO L93 Difference]: Finished difference Result 1053 states and 1300 transitions. [2020-08-22 04:33:06,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:33:06,872 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-22 04:33:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:33:06,879 INFO L225 Difference]: With dead ends: 1053 [2020-08-22 04:33:06,879 INFO L226 Difference]: Without dead ends: 1050 [2020-08-22 04:33:06,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:33:06,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-08-22 04:33:07,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 976. [2020-08-22 04:33:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-08-22 04:33:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1177 transitions. [2020-08-22 04:33:07,055 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1177 transitions. Word has length 132 [2020-08-22 04:33:07,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:33:07,055 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1177 transitions. [2020-08-22 04:33:07,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:33:07,056 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1177 transitions. [2020-08-22 04:33:07,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 04:33:07,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:33:07,059 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:33:07,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:33:07,060 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:33:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:33:07,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1244866615, now seen corresponding path program 1 times [2020-08-22 04:33:07,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:33:07,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359305187] [2020-08-22 04:33:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:33:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,342 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:33:07,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:33:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:33:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:33:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:33:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:33:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:33:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:33:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:33:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 04:33:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 04:33:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:33:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 04:33:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 04:33:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 04:33:07,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359305187] [2020-08-22 04:33:07,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:33:07,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:33:07,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027234884] [2020-08-22 04:33:07,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:33:07,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:33:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:33:07,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:33:07,595 INFO L87 Difference]: Start difference. First operand 976 states and 1177 transitions. Second operand 12 states. [2020-08-22 04:33:08,679 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:33:09,458 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:33:09,724 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:09,974 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:10,189 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:10,412 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:10,706 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:11,418 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:11,673 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:11,907 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:33:13,638 INFO L93 Difference]: Finished difference Result 2450 states and 3139 transitions. [2020-08-22 04:33:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 04:33:13,639 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-22 04:33:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:33:13,649 INFO L225 Difference]: With dead ends: 2450 [2020-08-22 04:33:13,649 INFO L226 Difference]: Without dead ends: 1653 [2020-08-22 04:33:13,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-22 04:33:13,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-08-22 04:33:13,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1471. [2020-08-22 04:33:13,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1471 states. [2020-08-22 04:33:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 1804 transitions. [2020-08-22 04:33:13,988 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 1804 transitions. Word has length 136 [2020-08-22 04:33:13,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:33:13,989 INFO L479 AbstractCegarLoop]: Abstraction has 1471 states and 1804 transitions. [2020-08-22 04:33:13,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:33:13,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 1804 transitions. [2020-08-22 04:33:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-22 04:33:13,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:33:13,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 04:33:13,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:33:13,997 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:33:13,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:33:13,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1705425798, now seen corresponding path program 2 times [2020-08-22 04:33:13,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:33:13,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080782852] [2020-08-22 04:33:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:33:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,334 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:33:14,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:33:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:33:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:33:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:33:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:33:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:33:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:33:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:33:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 04:33:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:33:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:33:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:33:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 04:33:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 04:33:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 04:33:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:33:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 04:33:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-22 04:33:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-08-22 04:33:14,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080782852] [2020-08-22 04:33:14,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:33:14,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 04:33:14,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975810128] [2020-08-22 04:33:14,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 04:33:14,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:33:14,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 04:33:14,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:33:14,579 INFO L87 Difference]: Start difference. First operand 1471 states and 1804 transitions. Second operand 14 states. [2020-08-22 04:33:15,056 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:15,665 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:16,180 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:16,447 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:16,699 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:16,933 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:17,262 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:17,528 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:19,334 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:19,582 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:20,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:33:20,561 INFO L93 Difference]: Finished difference Result 3362 states and 4500 transitions. [2020-08-22 04:33:20,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 04:33:20,562 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 193 [2020-08-22 04:33:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:33:20,573 INFO L225 Difference]: With dead ends: 3362 [2020-08-22 04:33:20,573 INFO L226 Difference]: Without dead ends: 2121 [2020-08-22 04:33:20,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=323, Invalid=937, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 04:33:20,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2020-08-22 04:33:20,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1361. [2020-08-22 04:33:20,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-08-22 04:33:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1680 transitions. [2020-08-22 04:33:20,828 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1680 transitions. Word has length 193 [2020-08-22 04:33:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:33:20,828 INFO L479 AbstractCegarLoop]: Abstraction has 1361 states and 1680 transitions. [2020-08-22 04:33:20,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 04:33:20,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1680 transitions. [2020-08-22 04:33:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-22 04:33:20,833 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:33:20,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:33:20,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 04:33:20,834 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:33:20,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:33:20,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1692744000, now seen corresponding path program 3 times [2020-08-22 04:33:20,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:33:20,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976914014] [2020-08-22 04:33:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:33:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,105 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:33:21,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:33:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:33:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:33:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:33:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:33:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:33:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:33:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:33:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 04:33:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:33:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:33:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:33:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 04:33:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 04:33:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:33:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-22 04:33:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 04:33:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-22 04:33:21,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976914014] [2020-08-22 04:33:21,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:33:21,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 04:33:21,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976708070] [2020-08-22 04:33:21,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 04:33:21,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:33:21,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 04:33:21,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-22 04:33:21,481 INFO L87 Difference]: Start difference. First operand 1361 states and 1680 transitions. Second operand 13 states.