/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:25:17,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:25:17,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:25:17,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:25:17,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:25:17,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:25:17,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:25:17,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:25:17,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:25:17,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:25:17,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:25:17,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:25:17,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:25:17,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:25:17,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:25:17,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:25:17,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:25:17,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:25:17,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:25:17,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:25:17,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:25:17,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:25:17,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:25:17,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:25:17,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:25:17,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:25:17,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:25:17,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:25:17,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:25:17,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:25:17,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:25:17,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:25:17,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:25:17,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:25:17,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:25:17,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:25:17,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:25:17,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:25:17,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:25:17,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:25:17,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:25:17,800 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 [2020-08-18 19:25:17,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:25:17,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:25:17,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:25:17,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:25:17,850 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:25:17,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:25:17,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:25:17,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:25:17,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:25:17,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:25:17,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:25:17,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:25:17,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:25:17,853 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:25:17,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:25:17,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:25:17,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:25:17,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:25:17,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:25:17,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:25:17,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:25:17,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:25:17,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:25:17,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:25:17,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:25:17,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:25:17,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:25:17,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:25:17,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:25:17,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:25:18,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:25:18,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:25:18,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:25:18,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:25:18,185 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:25:18,186 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2020-08-18 19:25:18,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc0f66c9b/c77453a2cfc84010bf65faac554c49c4/FLAGd5d114bda [2020-08-18 19:25:18,682 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:25:18,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2020-08-18 19:25:18,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc0f66c9b/c77453a2cfc84010bf65faac554c49c4/FLAGd5d114bda [2020-08-18 19:25:19,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc0f66c9b/c77453a2cfc84010bf65faac554c49c4 [2020-08-18 19:25:19,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:25:19,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:25:19,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:25:19,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:25:19,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:25:19,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:25:19" (1/1) ... [2020-08-18 19:25:19,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6452952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19, skipping insertion in model container [2020-08-18 19:25:19,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:25:19" (1/1) ... [2020-08-18 19:25:19,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:25:19,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:25:19,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:25:19,500 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:25:19,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:25:19,648 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:25:19,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19 WrapperNode [2020-08-18 19:25:19,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:25:19,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:25:19,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:25:19,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:25:19,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19" (1/1) ... [2020-08-18 19:25:19,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19" (1/1) ... [2020-08-18 19:25:19,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19" (1/1) ... [2020-08-18 19:25:19,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19" (1/1) ... [2020-08-18 19:25:19,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19" (1/1) ... [2020-08-18 19:25:19,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19" (1/1) ... [2020-08-18 19:25:19,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19" (1/1) ... [2020-08-18 19:25:19,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:25:19,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:25:19,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:25:19,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:25:19,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19" (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 [2020-08-18 19:25:19,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:25:19,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:25:19,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:25:19,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:25:19,800 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:25:19,800 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:25:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:25:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:25:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:25:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:25:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:25:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:25:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:25:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:25:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 19:25:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 19:25:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:25:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:25:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:25:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:25:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:25:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:25:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:25:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:25:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 19:25:19,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:25:19,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:25:19,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:25:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:25:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:25:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:25:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 19:25:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 19:25:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 19:25:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:25:19,810 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:25:19,810 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:25:19,810 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:25:19,810 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:25:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:25:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:25:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:25:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:25:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:25:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:25:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:25:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:25:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:25:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:25:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:25:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:25:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 19:25:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:25:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:25:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:25:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:25:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:25:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 19:25:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 19:25:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 19:25:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:25:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:25:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:25:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 19:25:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 19:25:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:25:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:25:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:25:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:25:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:25:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:25:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:25:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:25:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:25:19,821 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:25:19,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:25:19,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:25:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:25:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:25:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:25:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:25:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:25:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:25:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:25:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:25:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:25:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:25:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:25:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 19:25:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:25:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:25:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:25:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:25:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:25:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:25:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:25:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:25:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:25:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:25:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:25:20,834 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:25:20,834 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:25:20,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:25:20 BoogieIcfgContainer [2020-08-18 19:25:20,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:25:20,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:25:20,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:25:20,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:25:20,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:25:19" (1/3) ... [2020-08-18 19:25:20,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6406ae41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:25:20, skipping insertion in model container [2020-08-18 19:25:20,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:25:19" (2/3) ... [2020-08-18 19:25:20,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6406ae41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:25:20, skipping insertion in model container [2020-08-18 19:25:20,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:25:20" (3/3) ... [2020-08-18 19:25:20,847 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product50.cil.c [2020-08-18 19:25:20,857 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:25:20,865 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:25:20,878 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:25:20,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:25:20,903 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:25:20,903 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:25:20,904 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:25:20,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:25:20,904 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:25:20,904 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:25:20,905 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:25:20,926 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-18 19:25:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 19:25:20,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:20,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:20,939 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:20,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:20,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2053229239, now seen corresponding path program 1 times [2020-08-18 19:25:20,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:20,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251796609] [2020-08-18 19:25:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:21,655 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:21,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:21,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:21,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:21,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:21,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:21,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:25:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:21,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:21,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:25:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:21,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:25:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:21,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251796609] [2020-08-18 19:25:21,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:21,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:25:21,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266208473] [2020-08-18 19:25:21,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:25:21,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:21,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:25:21,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:25:21,794 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2020-08-18 19:25:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:22,873 INFO L93 Difference]: Finished difference Result 313 states and 401 transitions. [2020-08-18 19:25:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:25:22,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 19:25:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:22,903 INFO L225 Difference]: With dead ends: 313 [2020-08-18 19:25:22,903 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 19:25:22,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:25:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 19:25:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-08-18 19:25:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-18 19:25:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2020-08-18 19:25:23,003 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 59 [2020-08-18 19:25:23,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:23,004 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2020-08-18 19:25:23,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:25:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2020-08-18 19:25:23,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 19:25:23,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:23,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:23,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:25:23,009 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:23,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:23,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1701396789, now seen corresponding path program 1 times [2020-08-18 19:25:23,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:23,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011461839] [2020-08-18 19:25:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:23,368 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:23,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:23,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:23,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:23,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 19:25:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:23,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 19:25:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:23,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 19:25:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:23,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011461839] [2020-08-18 19:25:23,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:23,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:25:23,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13124156] [2020-08-18 19:25:23,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:25:23,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:23,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:25:23,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:25:23,429 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 5 states. [2020-08-18 19:25:23,861 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:24,638 INFO L93 Difference]: Finished difference Result 254 states and 309 transitions. [2020-08-18 19:25:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:25:24,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 19:25:24,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:24,642 INFO L225 Difference]: With dead ends: 254 [2020-08-18 19:25:24,642 INFO L226 Difference]: Without dead ends: 162 [2020-08-18 19:25:24,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:25:24,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-18 19:25:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2020-08-18 19:25:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 19:25:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 154 transitions. [2020-08-18 19:25:24,705 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 154 transitions. Word has length 60 [2020-08-18 19:25:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:24,705 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 154 transitions. [2020-08-18 19:25:24,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:25:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 154 transitions. [2020-08-18 19:25:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 19:25:24,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:24,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:24,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:25:24,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:24,719 INFO L82 PathProgramCache]: Analyzing trace with hash -835538636, now seen corresponding path program 1 times [2020-08-18 19:25:24,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:24,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338603049] [2020-08-18 19:25:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:25,061 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:25,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:25,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:25,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:25,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:25,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:25,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:25,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:25,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:25:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:25,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 19:25:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:25,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338603049] [2020-08-18 19:25:25,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:25,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:25,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853824073] [2020-08-18 19:25:25,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:25,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:25,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:25,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:25,224 INFO L87 Difference]: Start difference. First operand 133 states and 154 transitions. Second operand 9 states. [2020-08-18 19:25:25,609 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:25,939 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:26,169 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:26,378 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:27,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:27,545 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-08-18 19:25:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:25:27,548 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 19:25:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:27,551 INFO L225 Difference]: With dead ends: 267 [2020-08-18 19:25:27,551 INFO L226 Difference]: Without dead ends: 162 [2020-08-18 19:25:27,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:25:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-18 19:25:27,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2020-08-18 19:25:27,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 19:25:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-18 19:25:27,584 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 65 [2020-08-18 19:25:27,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:27,584 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-18 19:25:27,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:27,584 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-18 19:25:27,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 19:25:27,586 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:27,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:27,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:25:27,586 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:27,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:27,587 INFO L82 PathProgramCache]: Analyzing trace with hash -192684169, now seen corresponding path program 1 times [2020-08-18 19:25:27,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:27,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392426139] [2020-08-18 19:25:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,890 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:27,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 19:25:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:25:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:27,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392426139] [2020-08-18 19:25:27,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:27,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:25:27,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627350786] [2020-08-18 19:25:27,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:25:27,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:27,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:25:27,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:25:27,976 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 7 states. [2020-08-18 19:25:28,308 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:29,618 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:30,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:30,169 INFO L93 Difference]: Finished difference Result 371 states and 462 transitions. [2020-08-18 19:25:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:25:30,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-18 19:25:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:30,176 INFO L225 Difference]: With dead ends: 371 [2020-08-18 19:25:30,177 INFO L226 Difference]: Without dead ends: 266 [2020-08-18 19:25:30,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:25:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-18 19:25:30,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 220. [2020-08-18 19:25:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-18 19:25:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 252 transitions. [2020-08-18 19:25:30,226 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 252 transitions. Word has length 78 [2020-08-18 19:25:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:30,227 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 252 transitions. [2020-08-18 19:25:30,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:25:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 252 transitions. [2020-08-18 19:25:30,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 19:25:30,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:30,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:30,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:25:30,229 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:30,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1827957124, now seen corresponding path program 1 times [2020-08-18 19:25:30,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:30,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017117865] [2020-08-18 19:25:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,487 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 19:25:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 19:25:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:30,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017117865] [2020-08-18 19:25:30,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:30,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:25:30,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165619228] [2020-08-18 19:25:30,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:25:30,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:30,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:25:30,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:25:30,652 INFO L87 Difference]: Start difference. First operand 220 states and 252 transitions. Second operand 12 states. [2020-08-18 19:25:31,130 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:31,389 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:31,605 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:32,350 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:32,579 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:32,863 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:33,096 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:33,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:33,948 INFO L93 Difference]: Finished difference Result 457 states and 556 transitions. [2020-08-18 19:25:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 19:25:33,949 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-08-18 19:25:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:33,952 INFO L225 Difference]: With dead ends: 457 [2020-08-18 19:25:33,952 INFO L226 Difference]: Without dead ends: 265 [2020-08-18 19:25:33,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 19:25:33,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-08-18 19:25:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 225. [2020-08-18 19:25:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-18 19:25:33,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 257 transitions. [2020-08-18 19:25:33,997 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 257 transitions. Word has length 92 [2020-08-18 19:25:33,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:33,997 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 257 transitions. [2020-08-18 19:25:33,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:25:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 257 transitions. [2020-08-18 19:25:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 19:25:33,999 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:33,999 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:33,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:25:34,000 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:34,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:34,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1850589378, now seen corresponding path program 1 times [2020-08-18 19:25:34,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:34,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413533777] [2020-08-18 19:25:34,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,301 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:34,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 19:25:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 19:25:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 19:25:34,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413533777] [2020-08-18 19:25:34,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:34,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:34,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110713771] [2020-08-18 19:25:34,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:34,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:34,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:34,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:34,432 INFO L87 Difference]: Start difference. First operand 225 states and 257 transitions. Second operand 9 states. [2020-08-18 19:25:34,879 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:35,490 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:36,146 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:36,429 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:36,865 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:37,084 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:37,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:37,653 INFO L93 Difference]: Finished difference Result 467 states and 566 transitions. [2020-08-18 19:25:37,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:25:37,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 19:25:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:37,658 INFO L225 Difference]: With dead ends: 467 [2020-08-18 19:25:37,658 INFO L226 Difference]: Without dead ends: 270 [2020-08-18 19:25:37,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:25:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-18 19:25:37,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 224. [2020-08-18 19:25:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-18 19:25:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 254 transitions. [2020-08-18 19:25:37,697 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 254 transitions. Word has length 92 [2020-08-18 19:25:37,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:37,698 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 254 transitions. [2020-08-18 19:25:37,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:37,698 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 254 transitions. [2020-08-18 19:25:37,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:25:37,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:37,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:37,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:25:37,700 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:37,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:37,700 INFO L82 PathProgramCache]: Analyzing trace with hash 516367047, now seen corresponding path program 1 times [2020-08-18 19:25:37,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:37,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085925412] [2020-08-18 19:25:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,939 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:37,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 19:25:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:25:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:38,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:38,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085925412] [2020-08-18 19:25:38,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:38,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:25:38,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151139524] [2020-08-18 19:25:38,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:25:38,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:38,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:25:38,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:25:38,066 INFO L87 Difference]: Start difference. First operand 224 states and 254 transitions. Second operand 11 states. [2020-08-18 19:25:38,558 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:38,797 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:39,033 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:39,738 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:39,977 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:40,205 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:40,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:40,909 INFO L93 Difference]: Finished difference Result 467 states and 563 transitions. [2020-08-18 19:25:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:25:40,910 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 19:25:40,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:40,914 INFO L225 Difference]: With dead ends: 467 [2020-08-18 19:25:40,914 INFO L226 Difference]: Without dead ends: 271 [2020-08-18 19:25:40,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:25:40,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-18 19:25:40,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 228. [2020-08-18 19:25:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-18 19:25:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 258 transitions. [2020-08-18 19:25:40,993 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 258 transitions. Word has length 93 [2020-08-18 19:25:40,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:40,994 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 258 transitions. [2020-08-18 19:25:40,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:25:40,994 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 258 transitions. [2020-08-18 19:25:40,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:25:40,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:40,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:40,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:25:40,998 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:40,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:40,998 INFO L82 PathProgramCache]: Analyzing trace with hash -185232827, now seen corresponding path program 1 times [2020-08-18 19:25:40,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:40,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974338390] [2020-08-18 19:25:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,254 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:41,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 19:25:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:25:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:41,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974338390] [2020-08-18 19:25:41,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:41,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:25:41,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193482914] [2020-08-18 19:25:41,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:25:41,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:41,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:25:41,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:25:41,372 INFO L87 Difference]: Start difference. First operand 228 states and 258 transitions. Second operand 9 states. [2020-08-18 19:25:42,450 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:42,687 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:25:42,921 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:43,169 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:43,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:43,897 INFO L93 Difference]: Finished difference Result 468 states and 562 transitions. [2020-08-18 19:25:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 19:25:43,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 19:25:43,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:43,900 INFO L225 Difference]: With dead ends: 468 [2020-08-18 19:25:43,900 INFO L226 Difference]: Without dead ends: 268 [2020-08-18 19:25:43,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:25:43,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-18 19:25:43,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 228. [2020-08-18 19:25:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-18 19:25:43,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 257 transitions. [2020-08-18 19:25:43,944 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 257 transitions. Word has length 93 [2020-08-18 19:25:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:43,944 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 257 transitions. [2020-08-18 19:25:43,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:25:43,945 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 257 transitions. [2020-08-18 19:25:43,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 19:25:43,946 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:43,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:43,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:25:43,946 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash -2053119352, now seen corresponding path program 1 times [2020-08-18 19:25:43,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:43,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403456964] [2020-08-18 19:25:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,193 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:44,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:25:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 19:25:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 19:25:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:44,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403456964] [2020-08-18 19:25:44,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:44,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:25:44,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109902159] [2020-08-18 19:25:44,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:25:44,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:44,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:25:44,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:25:44,331 INFO L87 Difference]: Start difference. First operand 228 states and 257 transitions. Second operand 7 states. [2020-08-18 19:25:44,624 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:45,167 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:46,602 INFO L93 Difference]: Finished difference Result 649 states and 806 transitions. [2020-08-18 19:25:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:25:46,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-18 19:25:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:46,606 INFO L225 Difference]: With dead ends: 649 [2020-08-18 19:25:46,606 INFO L226 Difference]: Without dead ends: 449 [2020-08-18 19:25:46,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:25:46,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-08-18 19:25:46,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 407. [2020-08-18 19:25:46,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-08-18 19:25:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 473 transitions. [2020-08-18 19:25:46,702 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 473 transitions. Word has length 93 [2020-08-18 19:25:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:46,702 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 473 transitions. [2020-08-18 19:25:46,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:25:46,703 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 473 transitions. [2020-08-18 19:25:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 19:25:46,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:46,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:46,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:25:46,705 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:46,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:46,705 INFO L82 PathProgramCache]: Analyzing trace with hash 868259694, now seen corresponding path program 1 times [2020-08-18 19:25:46,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:46,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635471008] [2020-08-18 19:25:46,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,062 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:47,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:25:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:25:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 19:25:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 19:25:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 19:25:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:25:47,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635471008] [2020-08-18 19:25:47,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:25:47,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:25:47,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799678758] [2020-08-18 19:25:47,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:25:47,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:47,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:25:47,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:25:47,230 INFO L87 Difference]: Start difference. First operand 407 states and 473 transitions. Second operand 12 states. [2020-08-18 19:25:47,670 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:48,289 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:49,290 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:49,584 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:49,815 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:50,060 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:50,302 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:51,522 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:51,777 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:25:52,637 INFO L93 Difference]: Finished difference Result 1129 states and 1396 transitions. [2020-08-18 19:25:52,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 19:25:52,637 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-18 19:25:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:25:52,643 INFO L225 Difference]: With dead ends: 1129 [2020-08-18 19:25:52,644 INFO L226 Difference]: Without dead ends: 824 [2020-08-18 19:25:52,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 19:25:52,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-08-18 19:25:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 702. [2020-08-18 19:25:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-18 19:25:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 808 transitions. [2020-08-18 19:25:52,782 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 808 transitions. Word has length 97 [2020-08-18 19:25:52,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:25:52,783 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 808 transitions. [2020-08-18 19:25:52,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:25:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 808 transitions. [2020-08-18 19:25:52,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-18 19:25:52,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:25:52,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:25:52,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:25:52,787 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:25:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:25:52,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1063606964, now seen corresponding path program 1 times [2020-08-18 19:25:52,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:25:52,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092359908] [2020-08-18 19:25:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:25:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,188 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:25:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:25:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:25:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:25:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:25:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:25:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:25:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:25:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:25:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:25:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:25:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 19:25:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:25:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 19:25:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 19:25:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:25:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:25:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:25:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 19:25:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 19:25:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:25:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 19:25:53,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092359908] [2020-08-18 19:25:53,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:25:53,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 19:25:53,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446992352] [2020-08-18 19:25:53,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 19:25:53,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:25:53,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 19:25:53,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:25:53,558 INFO L87 Difference]: Start difference. First operand 702 states and 808 transitions. Second operand 16 states. [2020-08-18 19:25:54,156 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:54,486 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:25:54,737 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:25:54,985 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 19:25:55,607 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:55,881 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:56,557 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:25:56,880 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:25:57,704 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:57,960 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:25:58,214 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:25:58,506 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:59,030 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:25:59,406 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:25:59,739 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:26:00,316 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:00,588 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:26:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:01,085 INFO L93 Difference]: Finished difference Result 1547 states and 1835 transitions. [2020-08-18 19:26:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-18 19:26:01,086 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2020-08-18 19:26:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:01,092 INFO L225 Difference]: With dead ends: 1547 [2020-08-18 19:26:01,092 INFO L226 Difference]: Without dead ends: 943 [2020-08-18 19:26:01,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 19:26:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-08-18 19:26:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 850. [2020-08-18 19:26:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-08-18 19:26:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 986 transitions. [2020-08-18 19:26:01,246 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 986 transitions. Word has length 159 [2020-08-18 19:26:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:01,249 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 986 transitions. [2020-08-18 19:26:01,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 19:26:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 986 transitions. [2020-08-18 19:26:01,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-18 19:26:01,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:01,257 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:01,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:26:01,257 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:01,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:01,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1141492594, now seen corresponding path program 1 times [2020-08-18 19:26:01,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:01,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025752615] [2020-08-18 19:26:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,538 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:01,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:26:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:26:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:26:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:26:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 19:26:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:26:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 19:26:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 19:26:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-18 19:26:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:01,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 19:26:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-08-18 19:26:02,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025752615] [2020-08-18 19:26:02,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:02,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 19:26:02,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342801456] [2020-08-18 19:26:02,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 19:26:02,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:02,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 19:26:02,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:26:02,064 INFO L87 Difference]: Start difference. First operand 850 states and 986 transitions. Second operand 15 states. [2020-08-18 19:26:03,581 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:26:03,828 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:04,062 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:04,290 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:05,732 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:06,491 INFO L93 Difference]: Finished difference Result 2242 states and 2707 transitions. [2020-08-18 19:26:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 19:26:06,492 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-18 19:26:06,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:06,499 INFO L225 Difference]: With dead ends: 2242 [2020-08-18 19:26:06,500 INFO L226 Difference]: Without dead ends: 1325 [2020-08-18 19:26:06,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 19:26:06,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-08-18 19:26:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1123. [2020-08-18 19:26:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-08-18 19:26:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1332 transitions. [2020-08-18 19:26:06,707 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1332 transitions. Word has length 277 [2020-08-18 19:26:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:06,708 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1332 transitions. [2020-08-18 19:26:06,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 19:26:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1332 transitions. [2020-08-18 19:26:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-18 19:26:06,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:06,715 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:06,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 19:26:06,715 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:06,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:06,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1975666707, now seen corresponding path program 1 times [2020-08-18 19:26:06,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:06,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977092682] [2020-08-18 19:26:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,068 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:07,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:26:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:26:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:26:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:26:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:26:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-18 19:26:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:26:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 19:26:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 19:26:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 19:26:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 19:26:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-18 19:26:07,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977092682] [2020-08-18 19:26:07,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:07,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 19:26:07,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84730540] [2020-08-18 19:26:07,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 19:26:07,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:07,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 19:26:07,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:26:07,437 INFO L87 Difference]: Start difference. First operand 1123 states and 1332 transitions. Second operand 16 states. [2020-08-18 19:26:08,059 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:08,367 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:08,623 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:08,855 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:26:09,533 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:10,254 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:26:10,595 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:10,839 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:11,429 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:12,197 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:12,432 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:12,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:12,928 INFO L93 Difference]: Finished difference Result 2127 states and 2561 transitions. [2020-08-18 19:26:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 19:26:12,928 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-18 19:26:12,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:12,939 INFO L225 Difference]: With dead ends: 2127 [2020-08-18 19:26:12,940 INFO L226 Difference]: Without dead ends: 1125 [2020-08-18 19:26:12,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 19:26:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-18 19:26:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1075. [2020-08-18 19:26:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2020-08-18 19:26:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1258 transitions. [2020-08-18 19:26:13,142 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1258 transitions. Word has length 283 [2020-08-18 19:26:13,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:13,143 INFO L479 AbstractCegarLoop]: Abstraction has 1075 states and 1258 transitions. [2020-08-18 19:26:13,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 19:26:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1258 transitions. [2020-08-18 19:26:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-18 19:26:13,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:13,150 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 19:26:13,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 19:26:13,150 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:13,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:13,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1186071979, now seen corresponding path program 1 times [2020-08-18 19:26:13,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:13,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446266653] [2020-08-18 19:26:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,443 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:13,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:26:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:26:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:26:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:26:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:26:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 19:26:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:26:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 19:26:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 19:26:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-18 19:26:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-18 19:26:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-08-18 19:26:13,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446266653] [2020-08-18 19:26:13,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:13,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 19:26:13,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506843647] [2020-08-18 19:26:13,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:26:13,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:13,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:26:13,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:26:13,735 INFO L87 Difference]: Start difference. First operand 1075 states and 1258 transitions. Second operand 11 states. [2020-08-18 19:26:15,321 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:26:15,565 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:26:15,826 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:26:16,064 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:26:16,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:26:16,469 INFO L93 Difference]: Finished difference Result 2067 states and 2458 transitions. [2020-08-18 19:26:16,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 19:26:16,470 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 284 [2020-08-18 19:26:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:26:16,477 INFO L225 Difference]: With dead ends: 2067 [2020-08-18 19:26:16,477 INFO L226 Difference]: Without dead ends: 1113 [2020-08-18 19:26:16,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:26:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-08-18 19:26:16,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1085. [2020-08-18 19:26:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-08-18 19:26:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1268 transitions. [2020-08-18 19:26:16,693 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1268 transitions. Word has length 284 [2020-08-18 19:26:16,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:26:16,694 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1268 transitions. [2020-08-18 19:26:16,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:26:16,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1268 transitions. [2020-08-18 19:26:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-18 19:26:16,701 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:26:16,702 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:26:16,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 19:26:16,702 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:26:16,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:26:16,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1956805545, now seen corresponding path program 1 times [2020-08-18 19:26:16,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:26:16,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290454722] [2020-08-18 19:26:16,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:26:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,033 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:26:17,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:26:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:26:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:26:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:26:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:26:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:26:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 19:26:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:26:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 19:26:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:26:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:26:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 19:26:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:26:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 19:26:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 19:26:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:26:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 19:26:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:26:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 19:26:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:26:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:26:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:26:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-18 19:26:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-18 19:26:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:26:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 90 proven. 47 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-08-18 19:26:17,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290454722] [2020-08-18 19:26:17,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:26:17,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 19:26:17,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630132036] [2020-08-18 19:26:17,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 19:26:17,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:26:17,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 19:26:17,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:26:17,545 INFO L87 Difference]: Start difference. First operand 1085 states and 1268 transitions. Second operand 15 states. [2020-08-18 19:26:17,990 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189