/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:24:31,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:24:31,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:24:31,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:24:31,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:24:31,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:24:31,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:24:31,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:24:31,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:24:31,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:24:31,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:24:31,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:24:31,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:24:31,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:24:31,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:24:31,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:24:31,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:24:31,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:24:31,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:24:31,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:24:31,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:24:31,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:24:31,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:24:31,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:24:31,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:24:31,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:24:31,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:24:31,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:24:31,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:24:31,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:24:31,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:24:31,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:24:31,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:24:31,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:24:31,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:24:31,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:24:31,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:24:31,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:24:31,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:24:31,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:24:31,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:24:31,730 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 23:24:31,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:24:31,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:24:31,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:24:31,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:24:31,755 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:24:31,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:24:31,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:24:31,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:24:31,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:24:31,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:24:31,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:24:31,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:24:31,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:24:31,758 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:24:31,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:24:31,758 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:24:31,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:24:31,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:24:31,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:24:31,759 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:24:31,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:24:31,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:24:31,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:24:31,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:24:31,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:24:31,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:24:31,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:24:31,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:24:31,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:24:31,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:24:32,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:24:32,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:24:32,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:24:32,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:24:32,082 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:24:32,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-18 23:24:32,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0681eb1c2/b32fda5294d340f39a4a15058b34eedd/FLAG6070ba853 [2020-08-18 23:24:32,661 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:24:32,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-18 23:24:32,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0681eb1c2/b32fda5294d340f39a4a15058b34eedd/FLAG6070ba853 [2020-08-18 23:24:33,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0681eb1c2/b32fda5294d340f39a4a15058b34eedd [2020-08-18 23:24:33,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:24:33,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:24:33,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:24:33,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:24:33,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:24:33,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:24:33" (1/1) ... [2020-08-18 23:24:33,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9a5625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:24:33, skipping insertion in model container [2020-08-18 23:24:33,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:24:33" (1/1) ... [2020-08-18 23:24:33,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:24:33,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:24:33,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:24:33,630 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:24:33,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:24:33,773 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:24:33,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:24:33 WrapperNode [2020-08-18 23:24:33,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:24:33,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:24:33,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:24:33,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:24:33,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:24:33" (1/1) ... [2020-08-18 23:24:33,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:24:33" (1/1) ... [2020-08-18 23:24:33,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:24:33" (1/1) ... [2020-08-18 23:24:33,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:24:33" (1/1) ... [2020-08-18 23:24:33,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:24:33" (1/1) ... [2020-08-18 23:24:33,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:24:33" (1/1) ... [2020-08-18 23:24:33,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:24:33" (1/1) ... [2020-08-18 23:24:33,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:24:33,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:24:33,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:24:33,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:24:33,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:24:33" (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 23:24:33,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:24:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:24:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:24:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:24:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:24:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:24:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:24:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:24:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 23:24:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:24:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:24:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:24:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:24:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:24:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:24:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:24:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 23:24:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:24:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:24:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:24:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:24:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:24:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:24:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:24:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:24:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:24:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:24:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:24:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:24:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:24:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:24:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 23:24:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 23:24:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:24:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:24:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:24:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:24:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:24:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:24:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:24:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:24:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:24:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:24:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:24:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:24:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:24:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:24:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:24:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:24:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:24:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:24:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:24:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:24:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:24:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:24:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:24:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:24:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:24:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:24:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:24:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 23:24:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:24:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:24:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:24:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:24:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 23:24:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:24:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:24:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:24:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:24:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 23:24:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:24:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:24:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:24:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:24:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 23:24:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:24:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:24:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:24:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:24:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:24:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:24:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:24:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:24:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:24:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:24:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:24:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:24:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:24:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:24:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:24:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:24:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:24:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:24:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:24:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:24:34,969 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:24:34,970 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:24:34,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:24:34 BoogieIcfgContainer [2020-08-18 23:24:34,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:24:34,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:24:34,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:24:34,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:24:34,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:24:33" (1/3) ... [2020-08-18 23:24:34,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7a9731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:24:34, skipping insertion in model container [2020-08-18 23:24:34,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:24:33" (2/3) ... [2020-08-18 23:24:34,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7a9731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:24:34, skipping insertion in model container [2020-08-18 23:24:34,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:24:34" (3/3) ... [2020-08-18 23:24:34,983 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2020-08-18 23:24:34,993 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:24:35,001 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:24:35,014 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:24:35,038 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:24:35,038 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:24:35,039 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:24:35,039 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:24:35,039 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:24:35,039 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:24:35,040 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:24:35,040 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:24:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-18 23:24:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 23:24:35,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:24:35,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:24:35,073 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:24:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:24:35,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1091923628, now seen corresponding path program 1 times [2020-08-18 23:24:35,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:24:35,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019819407] [2020-08-18 23:24:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:24:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:35,762 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:24:35,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:24:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:35,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:24:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:35,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:24:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:35,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:24:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:35,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:24:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:35,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:24:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:35,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:24:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:24:35,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019819407] [2020-08-18 23:24:35,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:24:35,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:24:35,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953486902] [2020-08-18 23:24:35,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:24:35,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:24:35,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:24:35,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:24:35,879 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-08-18 23:24:37,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:24:37,047 INFO L93 Difference]: Finished difference Result 311 states and 407 transitions. [2020-08-18 23:24:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:24:37,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 23:24:37,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:24:37,063 INFO L225 Difference]: With dead ends: 311 [2020-08-18 23:24:37,064 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 23:24:37,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:24:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 23:24:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-18 23:24:37,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-18 23:24:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-18 23:24:37,158 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-08-18 23:24:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:24:37,158 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-18 23:24:37,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:24:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-18 23:24:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 23:24:37,162 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:24:37,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:24:37,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:24:37,162 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:24:37,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:24:37,163 INFO L82 PathProgramCache]: Analyzing trace with hash 644500822, now seen corresponding path program 1 times [2020-08-18 23:24:37,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:24:37,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650891091] [2020-08-18 23:24:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:24:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:37,485 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:24:37,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:24:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:37,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:24:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:24:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:37,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:24:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:37,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:24:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:37,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:24:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:37,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:24:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:24:37,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650891091] [2020-08-18 23:24:37,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:24:37,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:24:37,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351441394] [2020-08-18 23:24:37,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:24:37,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:24:37,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:24:37,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:24:37,530 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2020-08-18 23:24:38,037 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:24:38,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:24:38,784 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-18 23:24:38,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:24:38,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 23:24:38,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:24:38,788 INFO L225 Difference]: With dead ends: 238 [2020-08-18 23:24:38,788 INFO L226 Difference]: Without dead ends: 152 [2020-08-18 23:24:38,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:24:38,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-18 23:24:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2020-08-18 23:24:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 23:24:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-08-18 23:24:38,827 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-08-18 23:24:38,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:24:38,827 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-08-18 23:24:38,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:24:38,828 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-08-18 23:24:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 23:24:38,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:24:38,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:24:38,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:24:38,830 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:24:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:24:38,831 INFO L82 PathProgramCache]: Analyzing trace with hash -350015351, now seen corresponding path program 1 times [2020-08-18 23:24:38,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:24:38,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967203427] [2020-08-18 23:24:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:24:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:39,149 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:24:39,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:24:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:39,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:24:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:39,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:24:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:39,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:24:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:24:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:39,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:24:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:39,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:24:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:24:39,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967203427] [2020-08-18 23:24:39,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:24:39,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:24:39,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820892314] [2020-08-18 23:24:39,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:24:39,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:24:39,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:24:39,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:24:39,299 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2020-08-18 23:24:39,681 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:24:39,991 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:24:40,221 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:24:40,442 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:24:41,125 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:24:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:24:42,767 INFO L93 Difference]: Finished difference Result 427 states and 530 transitions. [2020-08-18 23:24:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:24:42,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 23:24:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:24:42,777 INFO L225 Difference]: With dead ends: 427 [2020-08-18 23:24:42,777 INFO L226 Difference]: Without dead ends: 326 [2020-08-18 23:24:42,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:24:42,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-18 23:24:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-18 23:24:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-18 23:24:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 324 transitions. [2020-08-18 23:24:42,855 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 324 transitions. Word has length 51 [2020-08-18 23:24:42,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:24:42,855 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 324 transitions. [2020-08-18 23:24:42,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:24:42,855 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 324 transitions. [2020-08-18 23:24:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 23:24:42,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:24:42,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:24:42,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:24:42,859 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:24:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:24:42,860 INFO L82 PathProgramCache]: Analyzing trace with hash -103520613, now seen corresponding path program 1 times [2020-08-18 23:24:42,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:24:42,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318008712] [2020-08-18 23:24:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:24:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:43,197 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:24:43,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:24:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:43,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:24:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:43,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:24:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:24:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:43,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:24:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:43,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:24:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:43,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 23:24:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:43,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 23:24:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:24:43,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318008712] [2020-08-18 23:24:43,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:24:43,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:24:43,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519888137] [2020-08-18 23:24:43,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:24:43,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:24:43,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:24:43,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:24:43,301 INFO L87 Difference]: Start difference. First operand 268 states and 324 transitions. Second operand 12 states. [2020-08-18 23:24:43,738 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:24:44,060 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:24:44,295 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:24:44,512 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:24:45,006 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:24:45,815 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:24:46,175 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:24:46,543 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:24:46,788 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:24:47,033 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:24:47,384 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:24:47,737 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:24:48,072 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:24:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:24:49,644 INFO L93 Difference]: Finished difference Result 1081 states and 1492 transitions. [2020-08-18 23:24:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 23:24:49,645 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 23:24:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:24:49,654 INFO L225 Difference]: With dead ends: 1081 [2020-08-18 23:24:49,655 INFO L226 Difference]: Without dead ends: 837 [2020-08-18 23:24:49,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 23:24:49,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-08-18 23:24:49,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 744. [2020-08-18 23:24:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-08-18 23:24:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 950 transitions. [2020-08-18 23:24:49,851 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 950 transitions. Word has length 57 [2020-08-18 23:24:49,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:24:49,851 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 950 transitions. [2020-08-18 23:24:49,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:24:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 950 transitions. [2020-08-18 23:24:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 23:24:49,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:24:49,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:24:49,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:24:49,857 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:24:49,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:24:49,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1065334495, now seen corresponding path program 1 times [2020-08-18 23:24:49,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:24:49,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974784627] [2020-08-18 23:24:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:24:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:50,098 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:24:50,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:24:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:50,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:24:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:50,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:24:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:50,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:24:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:24:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:24:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:50,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:24:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 23:24:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:50,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 23:24:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:24:50,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974784627] [2020-08-18 23:24:50,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:24:50,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:24:50,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598797243] [2020-08-18 23:24:50,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:24:50,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:24:50,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:24:50,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:24:50,218 INFO L87 Difference]: Start difference. First operand 744 states and 950 transitions. Second operand 6 states. [2020-08-18 23:24:50,597 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:24:52,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:24:52,204 INFO L93 Difference]: Finished difference Result 1779 states and 2437 transitions. [2020-08-18 23:24:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 23:24:52,204 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 23:24:52,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:24:52,213 INFO L225 Difference]: With dead ends: 1779 [2020-08-18 23:24:52,213 INFO L226 Difference]: Without dead ends: 1059 [2020-08-18 23:24:52,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:24:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-08-18 23:24:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 972. [2020-08-18 23:24:52,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-08-18 23:24:52,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1232 transitions. [2020-08-18 23:24:52,388 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1232 transitions. Word has length 61 [2020-08-18 23:24:52,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:24:52,388 INFO L479 AbstractCegarLoop]: Abstraction has 972 states and 1232 transitions. [2020-08-18 23:24:52,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:24:52,388 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1232 transitions. [2020-08-18 23:24:52,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 23:24:52,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:24:52,391 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:24:52,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:24:52,392 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:24:52,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:24:52,392 INFO L82 PathProgramCache]: Analyzing trace with hash 380759586, now seen corresponding path program 1 times [2020-08-18 23:24:52,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:24:52,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596028601] [2020-08-18 23:24:52,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:24:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,655 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:24:52,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:24:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:24:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:24:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:24:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:24:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:24:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:24:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 23:24:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:24:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:24:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 23:24:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 23:24:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 23:24:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 23:24:52,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596028601] [2020-08-18 23:24:52,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:24:52,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 23:24:52,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749535860] [2020-08-18 23:24:52,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:24:52,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:24:52,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:24:52,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:24:52,782 INFO L87 Difference]: Start difference. First operand 972 states and 1232 transitions. Second operand 10 states. [2020-08-18 23:24:53,400 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 23:24:53,929 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:24:55,709 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:24:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:24:57,381 INFO L93 Difference]: Finished difference Result 1881 states and 2481 transitions. [2020-08-18 23:24:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 23:24:57,382 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 23:24:57,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:24:57,391 INFO L225 Difference]: With dead ends: 1881 [2020-08-18 23:24:57,392 INFO L226 Difference]: Without dead ends: 1176 [2020-08-18 23:24:57,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 23:24:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-08-18 23:24:57,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1079. [2020-08-18 23:24:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-08-18 23:24:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1343 transitions. [2020-08-18 23:24:57,679 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1343 transitions. Word has length 88 [2020-08-18 23:24:57,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:24:57,681 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1343 transitions. [2020-08-18 23:24:57,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:24:57,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1343 transitions. [2020-08-18 23:24:57,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 23:24:57,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:24:57,688 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:24:57,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:24:57,689 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:24:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:24:57,689 INFO L82 PathProgramCache]: Analyzing trace with hash 605263964, now seen corresponding path program 1 times [2020-08-18 23:24:57,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:24:57,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918686069] [2020-08-18 23:24:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:24:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:57,948 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:24:57,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:24:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:24:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:57,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:24:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:57,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:24:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:57,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:24:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:57,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:24:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:24:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:24:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:24:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:24:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:24:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:24:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:24:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 23:24:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 23:24:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:24:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:24:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:24:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 23:24:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 23:24:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:24:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 23:24:58,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918686069] [2020-08-18 23:24:58,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:24:58,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 23:24:58,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228988981] [2020-08-18 23:24:58,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:24:58,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:24:58,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:24:58,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:24:58,146 INFO L87 Difference]: Start difference. First operand 1079 states and 1343 transitions. Second operand 10 states. [2020-08-18 23:24:59,330 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:24:59,567 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:24:59,830 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:00,065 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:01,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:25:01,117 INFO L93 Difference]: Finished difference Result 2275 states and 2959 transitions. [2020-08-18 23:25:01,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:25:01,118 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-08-18 23:25:01,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:25:01,125 INFO L225 Difference]: With dead ends: 2275 [2020-08-18 23:25:01,125 INFO L226 Difference]: Without dead ends: 1220 [2020-08-18 23:25:01,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:25:01,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-18 23:25:01,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1109. [2020-08-18 23:25:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-08-18 23:25:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1377 transitions. [2020-08-18 23:25:01,358 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1377 transitions. Word has length 128 [2020-08-18 23:25:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:25:01,359 INFO L479 AbstractCegarLoop]: Abstraction has 1109 states and 1377 transitions. [2020-08-18 23:25:01,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:25:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1377 transitions. [2020-08-18 23:25:01,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 23:25:01,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:25:01,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:25:01,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:25:01,364 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:25:01,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:25:01,364 INFO L82 PathProgramCache]: Analyzing trace with hash -2030061671, now seen corresponding path program 1 times [2020-08-18 23:25:01,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:25:01,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940121412] [2020-08-18 23:25:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:25:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,625 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:25:01,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:25:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:25:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:25:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:25:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:25:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:25:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:25:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:25:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:25:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 23:25:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:25:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:25:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 23:25:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 23:25:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:01,788 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 23:25:01,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940121412] [2020-08-18 23:25:01,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:25:01,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 23:25:01,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476256508] [2020-08-18 23:25:01,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:25:01,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:25:01,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:25:01,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:25:01,791 INFO L87 Difference]: Start difference. First operand 1109 states and 1377 transitions. Second operand 10 states. [2020-08-18 23:25:03,652 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:03,878 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:25:04,117 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:04,357 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:04,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:25:04,774 INFO L93 Difference]: Finished difference Result 2059 states and 2638 transitions. [2020-08-18 23:25:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 23:25:04,779 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-18 23:25:04,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:25:04,787 INFO L225 Difference]: With dead ends: 2059 [2020-08-18 23:25:04,787 INFO L226 Difference]: Without dead ends: 1256 [2020-08-18 23:25:04,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:25:04,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2020-08-18 23:25:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1145. [2020-08-18 23:25:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2020-08-18 23:25:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1425 transitions. [2020-08-18 23:25:05,036 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1425 transitions. Word has length 132 [2020-08-18 23:25:05,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:25:05,036 INFO L479 AbstractCegarLoop]: Abstraction has 1145 states and 1425 transitions. [2020-08-18 23:25:05,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:25:05,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1425 transitions. [2020-08-18 23:25:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-18 23:25:05,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:25:05,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:25:05,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:25:05,043 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:25:05,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:25:05,044 INFO L82 PathProgramCache]: Analyzing trace with hash 336030620, now seen corresponding path program 1 times [2020-08-18 23:25:05,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:25:05,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693403325] [2020-08-18 23:25:05,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:25:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,337 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:25:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:25:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:25:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:25:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:25:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:25:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:25:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:25:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:25:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 23:25:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 23:25:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:25:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 23:25:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 23:25:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 23:25:05,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693403325] [2020-08-18 23:25:05,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:25:05,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 23:25:05,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531185063] [2020-08-18 23:25:05,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:25:05,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:25:05,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:25:05,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:25:05,535 INFO L87 Difference]: Start difference. First operand 1145 states and 1425 transitions. Second operand 12 states. [2020-08-18 23:25:06,190 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:25:06,452 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:06,689 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:07,335 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:07,588 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:07,812 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:08,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:25:08,839 INFO L93 Difference]: Finished difference Result 2153 states and 2757 transitions. [2020-08-18 23:25:08,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:25:08,840 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-18 23:25:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:25:08,846 INFO L225 Difference]: With dead ends: 2153 [2020-08-18 23:25:08,846 INFO L226 Difference]: Without dead ends: 1032 [2020-08-18 23:25:08,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:25:08,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-08-18 23:25:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 976. [2020-08-18 23:25:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-08-18 23:25:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1182 transitions. [2020-08-18 23:25:09,020 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1182 transitions. Word has length 128 [2020-08-18 23:25:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:25:09,022 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1182 transitions. [2020-08-18 23:25:09,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:25:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1182 transitions. [2020-08-18 23:25:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 23:25:09,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:25:09,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:25:09,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:25:09,026 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:25:09,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:25:09,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1755432535, now seen corresponding path program 1 times [2020-08-18 23:25:09,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:25:09,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673744480] [2020-08-18 23:25:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:25:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,329 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:25:09,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:25:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:25:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:25:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:25:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:25:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:25:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:25:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:25:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:25:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 23:25:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:25:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:25:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 23:25:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 23:25:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 23:25:09,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673744480] [2020-08-18 23:25:09,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:25:09,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 23:25:09,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942652603] [2020-08-18 23:25:09,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:25:09,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:25:09,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:25:09,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:25:09,487 INFO L87 Difference]: Start difference. First operand 976 states and 1182 transitions. Second operand 10 states. [2020-08-18 23:25:10,060 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:25:11,547 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:25:11,790 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:25:12,022 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:25:12,256 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:25:12,524 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:12,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:25:12,831 INFO L93 Difference]: Finished difference Result 1053 states and 1300 transitions. [2020-08-18 23:25:12,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 23:25:12,831 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-18 23:25:12,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:25:12,838 INFO L225 Difference]: With dead ends: 1053 [2020-08-18 23:25:12,838 INFO L226 Difference]: Without dead ends: 1050 [2020-08-18 23:25:12,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:25:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-08-18 23:25:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 976. [2020-08-18 23:25:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-08-18 23:25:13,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1177 transitions. [2020-08-18 23:25:13,020 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1177 transitions. Word has length 132 [2020-08-18 23:25:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:25:13,021 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1177 transitions. [2020-08-18 23:25:13,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:25:13,021 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1177 transitions. [2020-08-18 23:25:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 23:25:13,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:25:13,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:25:13,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:25:13,026 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:25:13,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:25:13,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1244866615, now seen corresponding path program 1 times [2020-08-18 23:25:13,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:25:13,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994606179] [2020-08-18 23:25:13,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:25:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,364 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:25:13,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:25:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:25:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:25:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:25:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:25:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:25:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:25:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:25:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:25:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 23:25:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 23:25:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:25:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 23:25:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-18 23:25:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 23:25:13,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994606179] [2020-08-18 23:25:13,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:25:13,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 23:25:13,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142396478] [2020-08-18 23:25:13,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:25:13,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:25:13,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:25:13,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:25:13,540 INFO L87 Difference]: Start difference. First operand 976 states and 1177 transitions. Second operand 12 states. [2020-08-18 23:25:14,067 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:25:14,869 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:25:15,125 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:25:15,369 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:25:15,586 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:25:15,812 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:25:16,109 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:25:16,815 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:25:17,098 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:25:17,340 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:25:19,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:25:19,301 INFO L93 Difference]: Finished difference Result 2450 states and 3139 transitions. [2020-08-18 23:25:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 23:25:19,305 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-18 23:25:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:25:19,314 INFO L225 Difference]: With dead ends: 2450 [2020-08-18 23:25:19,314 INFO L226 Difference]: Without dead ends: 1653 [2020-08-18 23:25:19,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-18 23:25:19,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-08-18 23:25:19,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1471. [2020-08-18 23:25:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1471 states. [2020-08-18 23:25:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 1804 transitions. [2020-08-18 23:25:19,553 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 1804 transitions. Word has length 136 [2020-08-18 23:25:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:25:19,553 INFO L479 AbstractCegarLoop]: Abstraction has 1471 states and 1804 transitions. [2020-08-18 23:25:19,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:25:19,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 1804 transitions. [2020-08-18 23:25:19,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-18 23:25:19,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:25:19,561 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:25:19,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:25:19,561 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:25:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:25:19,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1692744000, now seen corresponding path program 2 times [2020-08-18 23:25:19,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:25:19,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72663479] [2020-08-18 23:25:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:25:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:19,907 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:25:19,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:25:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:19,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:25:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:25:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:25:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:19,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:25:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:19,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:25:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:19,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:25:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:19,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:19,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:25:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:25:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 23:25:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:25:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:25:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:25:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 23:25:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-18 23:25:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:25:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-18 23:25:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 23:25:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 23:25:20,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72663479] [2020-08-18 23:25:20,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:25:20,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 23:25:20,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214172698] [2020-08-18 23:25:20,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:25:20,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:25:20,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:25:20,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:25:20,238 INFO L87 Difference]: Start difference. First operand 1471 states and 1804 transitions. Second operand 13 states. [2020-08-18 23:25:21,448 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:25:21,718 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:25:23,486 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 23:25:23,725 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:25:23,992 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:25:24,404 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-18 23:25:25,407 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 23:25:25,665 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:25:25,926 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:25:27,304 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-18 23:25:27,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:25:27,947 INFO L93 Difference]: Finished difference Result 3719 states and 4726 transitions. [2020-08-18 23:25:27,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 23:25:27,948 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-18 23:25:27,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:25:27,969 INFO L225 Difference]: With dead ends: 3719 [2020-08-18 23:25:27,969 INFO L226 Difference]: Without dead ends: 2400 [2020-08-18 23:25:27,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=318, Invalid=1088, Unknown=0, NotChecked=0, Total=1406 [2020-08-18 23:25:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2020-08-18 23:25:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2173. [2020-08-18 23:25:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2173 states. [2020-08-18 23:25:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2646 transitions. [2020-08-18 23:25:28,472 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2646 transitions. Word has length 189 [2020-08-18 23:25:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:25:28,473 INFO L479 AbstractCegarLoop]: Abstraction has 2173 states and 2646 transitions. [2020-08-18 23:25:28,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:25:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2646 transitions. [2020-08-18 23:25:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-18 23:25:28,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:25:28,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:25:28,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:25:28,481 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:25:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:25:28,481 INFO L82 PathProgramCache]: Analyzing trace with hash 934692232, now seen corresponding path program 1 times [2020-08-18 23:25:28,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:25:28,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362675182] [2020-08-18 23:25:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:25:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,747 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:25:28,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:25:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:25:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:25:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:25:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:25:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:25:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:25:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:25:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 23:25:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 23:25:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:25:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:25:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:25:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-18 23:25:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-18 23:25:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-18 23:25:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:25:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 23:25:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:25:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-18 23:25:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:28,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-18 23:25:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:25:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-08-18 23:25:29,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362675182] [2020-08-18 23:25:29,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:25:29,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 23:25:29,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797782336] [2020-08-18 23:25:29,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:25:29,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:25:29,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:25:29,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:25:29,038 INFO L87 Difference]: Start difference. First operand 2173 states and 2646 transitions. Second operand 13 states. [2020-08-18 23:25:29,527 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:25:29,762 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187