/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:32:33,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:32:33,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:32:33,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:32:33,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:32:33,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:32:33,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:32:33,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:32:33,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:32:33,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:32:33,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:32:33,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:32:33,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:32:33,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:32:33,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:32:33,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:32:33,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:32:33,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:32:33,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:32:33,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:32:33,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:32:33,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:32:33,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:32:33,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:32:33,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:32:33,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:32:33,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:32:33,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:32:33,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:32:33,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:32:33,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:32:33,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:32:33,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:32:33,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:32:33,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:32:33,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:32:33,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:32:33,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:32:33,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:32:33,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:32:33,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:32:33,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 04:32:33,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:32:33,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:32:33,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:32:33,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:32:33,811 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:32:33,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:32:33,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:32:33,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:32:33,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:32:33,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:32:33,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:32:33,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:32:33,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:32:33,813 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:32:33,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:32:33,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:32:33,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:32:33,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:32:33,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:32:33,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:32:33,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:32:33,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:32:33,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:32:33,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:32:33,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:32:33,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:32:33,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:32:33,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:32:33,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:32:33,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:32:34,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:32:34,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:32:34,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:32:34,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:32:34,159 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:32:34,162 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-22 04:32:34,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/990c7ecaa/aa806d9264af47209eb155aca7765da3/FLAGf6c078f38 [2020-08-22 04:32:34,753 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:32:34,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-22 04:32:34,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/990c7ecaa/aa806d9264af47209eb155aca7765da3/FLAGf6c078f38 [2020-08-22 04:32:35,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/990c7ecaa/aa806d9264af47209eb155aca7765da3 [2020-08-22 04:32:35,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:32:35,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:32:35,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:32:35,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:32:35,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:32:35,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:32:35" (1/1) ... [2020-08-22 04:32:35,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:35, skipping insertion in model container [2020-08-22 04:32:35,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:32:35" (1/1) ... [2020-08-22 04:32:35,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:32:35,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:32:35,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:32:35,581 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:32:35,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:32:35,707 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:32:35,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:35 WrapperNode [2020-08-22 04:32:35,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:32:35,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:32:35,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:32:35,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:32:35,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:35" (1/1) ... [2020-08-22 04:32:35,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:35" (1/1) ... [2020-08-22 04:32:35,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:35" (1/1) ... [2020-08-22 04:32:35,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:35" (1/1) ... [2020-08-22 04:32:35,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:35" (1/1) ... [2020-08-22 04:32:35,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:35" (1/1) ... [2020-08-22 04:32:35,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:35" (1/1) ... [2020-08-22 04:32:35,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:32:35,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:32:35,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:32:35,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:32:35,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:32:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:32:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:32:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:32:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:32:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:32:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:32:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:32:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:32:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:32:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:32:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:32:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:32:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:32:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:32:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:32:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:32:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:32:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:32:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 04:32:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:32:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:32:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:32:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:32:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:32:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:32:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:32:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 04:32:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:32:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:32:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:32:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:32:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 04:32:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:32:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 04:32:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:32:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:32:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:32:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:32:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:32:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:32:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 04:32:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 04:32:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:32:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:32:35,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:32:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:32:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:32:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:32:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:32:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:32:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:32:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:32:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:32:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:32:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:32:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:32:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:32:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:32:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:32:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:32:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:32:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:32:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:32:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:32:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:32:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:32:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:32:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:32:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:32:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:32:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:32:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:32:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:32:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:32:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:32:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:32:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:32:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:32:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:32:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:32:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 04:32:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:32:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:32:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:32:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:32:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 04:32:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:32:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:32:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 04:32:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:32:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:32:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:32:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:32:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 04:32:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 04:32:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:32:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 04:32:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:32:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:32:35,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:32:36,943 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:32:36,943 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:32:36,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:32:36 BoogieIcfgContainer [2020-08-22 04:32:36,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:32:36,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:32:36,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:32:36,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:32:36,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:32:35" (1/3) ... [2020-08-22 04:32:36,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5ce5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:32:36, skipping insertion in model container [2020-08-22 04:32:36,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:35" (2/3) ... [2020-08-22 04:32:36,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5ce5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:32:36, skipping insertion in model container [2020-08-22 04:32:36,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:32:36" (3/3) ... [2020-08-22 04:32:36,957 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2020-08-22 04:32:36,967 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:32:36,976 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:32:36,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:32:37,016 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:32:37,017 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:32:37,017 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:32:37,017 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:32:37,017 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:32:37,018 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:32:37,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:32:37,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:32:37,042 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-22 04:32:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 04:32:37,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:37,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:37,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:37,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:37,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2020-08-22 04:32:37,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:37,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940114431] [2020-08-22 04:32:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:37,737 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:37,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:37,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:37,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:37,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:37,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:32:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:37,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:32:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:32:37,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940114431] [2020-08-22 04:32:37,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:37,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:32:37,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000494785] [2020-08-22 04:32:37,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:32:37,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:37,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:32:37,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:32:37,871 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2020-08-22 04:32:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:39,264 INFO L93 Difference]: Finished difference Result 365 states and 474 transitions. [2020-08-22 04:32:39,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:32:39,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 04:32:39,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:39,282 INFO L225 Difference]: With dead ends: 365 [2020-08-22 04:32:39,282 INFO L226 Difference]: Without dead ends: 197 [2020-08-22 04:32:39,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:32:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-08-22 04:32:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-08-22 04:32:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 04:32:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-22 04:32:39,399 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2020-08-22 04:32:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:39,400 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-22 04:32:39,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:32:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-22 04:32:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 04:32:39,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:39,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:39,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:32:39,413 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:39,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:39,414 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2020-08-22 04:32:39,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:39,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996946636] [2020-08-22 04:32:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,795 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:32:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:32:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:32:39,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996946636] [2020-08-22 04:32:39,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:39,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:32:39,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058341592] [2020-08-22 04:32:39,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:32:39,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:39,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:32:39,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:32:39,842 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2020-08-22 04:32:40,311 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:41,425 INFO L93 Difference]: Finished difference Result 292 states and 357 transitions. [2020-08-22 04:32:41,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:32:41,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 04:32:41,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:41,434 INFO L225 Difference]: With dead ends: 292 [2020-08-22 04:32:41,435 INFO L226 Difference]: Without dead ends: 181 [2020-08-22 04:32:41,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:32:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-22 04:32:41,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2020-08-22 04:32:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 04:32:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-22 04:32:41,511 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2020-08-22 04:32:41,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:41,512 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-22 04:32:41,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:32:41,512 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-22 04:32:41,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 04:32:41,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:41,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:41,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:32:41,517 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:41,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:41,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2020-08-22 04:32:41,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:41,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124194446] [2020-08-22 04:32:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:41,854 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:41,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:41,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:41,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:41,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:41,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:32:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:41,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:32:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:32:41,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124194446] [2020-08-22 04:32:41,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:41,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:32:41,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434526805] [2020-08-22 04:32:41,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:32:41,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:41,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:32:41,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:32:41,939 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 8 states. [2020-08-22 04:32:42,291 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:42,577 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:42,825 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:43,053 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:43,689 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:45,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:45,950 INFO L93 Difference]: Finished difference Result 510 states and 633 transitions. [2020-08-22 04:32:45,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:32:45,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 04:32:45,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:45,956 INFO L225 Difference]: With dead ends: 510 [2020-08-22 04:32:45,957 INFO L226 Difference]: Without dead ends: 384 [2020-08-22 04:32:45,961 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 [2020-08-22 04:32:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-08-22 04:32:46,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 318. [2020-08-22 04:32:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-08-22 04:32:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2020-08-22 04:32:46,039 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 51 [2020-08-22 04:32:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:46,040 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2020-08-22 04:32:46,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:32:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2020-08-22 04:32:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 04:32:46,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:46,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:46,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:32:46,042 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:46,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:46,042 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2020-08-22 04:32:46,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:46,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450251728] [2020-08-22 04:32:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,357 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:46,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:32:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:32:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:32:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:32:46,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450251728] [2020-08-22 04:32:46,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:46,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:32:46,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670245632] [2020-08-22 04:32:46,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:32:46,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:46,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:32:46,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:32:46,475 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand 12 states. [2020-08-22 04:32:46,825 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:47,159 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:47,423 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:47,675 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:48,194 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:49,008 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:49,405 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:49,734 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:50,009 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:32:50,302 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:50,672 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:51,056 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:51,506 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:53,829 INFO L93 Difference]: Finished difference Result 1305 states and 1782 transitions. [2020-08-22 04:32:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 04:32:53,830 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 04:32:53,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:53,844 INFO L225 Difference]: With dead ends: 1305 [2020-08-22 04:32:53,844 INFO L226 Difference]: Without dead ends: 1011 [2020-08-22 04:32:53,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 04:32:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-08-22 04:32:54,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 910. [2020-08-22 04:32:54,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-22 04:32:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1164 transitions. [2020-08-22 04:32:54,091 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1164 transitions. Word has length 57 [2020-08-22 04:32:54,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:54,092 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1164 transitions. [2020-08-22 04:32:54,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:32:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1164 transitions. [2020-08-22 04:32:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 04:32:54,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:54,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:54,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:32:54,096 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:54,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:54,096 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2020-08-22 04:32:54,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:54,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559306850] [2020-08-22 04:32:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:54,333 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:54,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:54,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:54,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:54,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:54,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:32:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:54,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:32:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:54,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:32:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:54,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 04:32:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:32:54,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559306850] [2020-08-22 04:32:54,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:54,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:32:54,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117909982] [2020-08-22 04:32:54,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:32:54,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:54,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:32:54,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:32:54,455 INFO L87 Difference]: Start difference. First operand 910 states and 1164 transitions. Second operand 6 states. [2020-08-22 04:32:54,759 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:56,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:56,902 INFO L93 Difference]: Finished difference Result 2165 states and 2945 transitions. [2020-08-22 04:32:56,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 04:32:56,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 04:32:56,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:56,917 INFO L225 Difference]: With dead ends: 2165 [2020-08-22 04:32:56,917 INFO L226 Difference]: Without dead ends: 1279 [2020-08-22 04:32:56,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:32:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-22 04:32:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1192. [2020-08-22 04:32:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-08-22 04:32:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1486 transitions. [2020-08-22 04:32:57,267 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1486 transitions. Word has length 61 [2020-08-22 04:32:57,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:57,267 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1486 transitions. [2020-08-22 04:32:57,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:32:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1486 transitions. [2020-08-22 04:32:57,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 04:32:57,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:57,273 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:57,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:32:57,274 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:57,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:57,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2051159117, now seen corresponding path program 1 times [2020-08-22 04:32:57,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:57,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545403983] [2020-08-22 04:32:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,675 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:57,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:32:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:32:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:32:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 04:32:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:32:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:32:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:57,841 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 04:32:57,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545403983] [2020-08-22 04:32:57,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:57,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:32:57,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029809254] [2020-08-22 04:32:57,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:32:57,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:57,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:32:57,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:32:57,845 INFO L87 Difference]: Start difference. First operand 1192 states and 1486 transitions. Second operand 10 states. [2020-08-22 04:32:58,422 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 04:32:58,996 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:01,104 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:33:03,478 INFO L93 Difference]: Finished difference Result 2279 states and 2961 transitions. [2020-08-22 04:33:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 04:33:03,479 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 04:33:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:33:03,489 INFO L225 Difference]: With dead ends: 2279 [2020-08-22 04:33:03,489 INFO L226 Difference]: Without dead ends: 1402 [2020-08-22 04:33:03,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 04:33:03,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-08-22 04:33:03,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1305. [2020-08-22 04:33:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-22 04:33:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1607 transitions. [2020-08-22 04:33:03,733 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1607 transitions. Word has length 88 [2020-08-22 04:33:03,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:33:03,735 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1607 transitions. [2020-08-22 04:33:03,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:33:03,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1607 transitions. [2020-08-22 04:33:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 04:33:03,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:33:03,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:33:03,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:33:03,740 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:33:03,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:33:03,741 INFO L82 PathProgramCache]: Analyzing trace with hash -923959180, now seen corresponding path program 1 times [2020-08-22 04:33:03,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:33:03,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093874234] [2020-08-22 04:33:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:33:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,072 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:33:04,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:33:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:33:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:33:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:33:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:33:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:33:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:33:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:33:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 04:33:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 04:33:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:33:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 04:33:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 04:33:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 04:33:04,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093874234] [2020-08-22 04:33:04,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:33:04,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 04:33:04,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709651259] [2020-08-22 04:33:04,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:33:04,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:33:04,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:33:04,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:33:04,301 INFO L87 Difference]: Start difference. First operand 1305 states and 1607 transitions. Second operand 9 states. [2020-08-22 04:33:05,244 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:33:05,468 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:33:05,712 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:33:06,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:33:06,937 INFO L93 Difference]: Finished difference Result 2395 states and 3094 transitions. [2020-08-22 04:33:06,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:33:06,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 150 [2020-08-22 04:33:06,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:33:06,948 INFO L225 Difference]: With dead ends: 2395 [2020-08-22 04:33:06,948 INFO L226 Difference]: Without dead ends: 1428 [2020-08-22 04:33:06,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:33:06,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2020-08-22 04:33:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1305. [2020-08-22 04:33:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-22 04:33:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1605 transitions. [2020-08-22 04:33:07,241 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1605 transitions. Word has length 150 [2020-08-22 04:33:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:33:07,242 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1605 transitions. [2020-08-22 04:33:07,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:33:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1605 transitions. [2020-08-22 04:33:07,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 04:33:07,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:33:07,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:33:07,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:33:07,249 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:33:07,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:33:07,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1752033202, now seen corresponding path program 1 times [2020-08-22 04:33:07,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:33:07,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842281676] [2020-08-22 04:33:07,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:33:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,573 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:33:07,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:33:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:33:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:33:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:33:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:33:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:33:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:33:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:33:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 04:33:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 04:33:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:33:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 04:33:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 04:33:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:07,845 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-22 04:33:07,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842281676] [2020-08-22 04:33:07,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:33:07,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 04:33:07,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897069802] [2020-08-22 04:33:07,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 04:33:07,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:33:07,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 04:33:07,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:33:07,849 INFO L87 Difference]: Start difference. First operand 1305 states and 1605 transitions. Second operand 15 states. [2020-08-22 04:33:08,395 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:09,189 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:33:10,587 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:10,959 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:11,257 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:11,533 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:33:11,868 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:33:12,197 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:33:12,703 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-22 04:33:13,171 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-22 04:33:13,969 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:14,199 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:14,496 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:33:14,722 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:33:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:33:15,686 INFO L93 Difference]: Finished difference Result 3652 states and 4736 transitions. [2020-08-22 04:33:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 04:33:15,687 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-08-22 04:33:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:33:15,701 INFO L225 Difference]: With dead ends: 3652 [2020-08-22 04:33:15,701 INFO L226 Difference]: Without dead ends: 2371 [2020-08-22 04:33:15,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 04:33:15,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-08-22 04:33:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2171. [2020-08-22 04:33:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2171 states. [2020-08-22 04:33:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 2620 transitions. [2020-08-22 04:33:16,104 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 2620 transitions. Word has length 150 [2020-08-22 04:33:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:33:16,105 INFO L479 AbstractCegarLoop]: Abstraction has 2171 states and 2620 transitions. [2020-08-22 04:33:16,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 04:33:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 2620 transitions. [2020-08-22 04:33:16,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 04:33:16,111 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:33:16,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:33:16,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:33:16,112 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:33:16,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:33:16,112 INFO L82 PathProgramCache]: Analyzing trace with hash -547203946, now seen corresponding path program 1 times [2020-08-22 04:33:16,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:33:16,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631203395] [2020-08-22 04:33:16,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:33:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,479 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:33:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:33:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:33:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:33:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:33:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:33:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:33:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:33:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:16,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:33:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 04:33:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 04:33:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 04:33:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:33:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 04:33:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 04:33:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-22 04:33:16,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631203395] [2020-08-22 04:33:16,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:33:16,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 04:33:16,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646615199] [2020-08-22 04:33:16,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:33:16,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:33:16,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:33:16,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:33:16,636 INFO L87 Difference]: Start difference. First operand 2171 states and 2620 transitions. Second operand 11 states. [2020-08-22 04:33:16,957 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:19,144 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:19,425 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:19,688 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:20,078 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:20,326 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:33:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:33:20,891 INFO L93 Difference]: Finished difference Result 2648 states and 3478 transitions. [2020-08-22 04:33:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 04:33:20,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-22 04:33:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:33:20,910 INFO L225 Difference]: With dead ends: 2648 [2020-08-22 04:33:20,910 INFO L226 Difference]: Without dead ends: 2645 [2020-08-22 04:33:20,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-22 04:33:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2020-08-22 04:33:21,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2171. [2020-08-22 04:33:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2171 states. [2020-08-22 04:33:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 2610 transitions. [2020-08-22 04:33:21,472 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 2610 transitions. Word has length 154 [2020-08-22 04:33:21,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:33:21,474 INFO L479 AbstractCegarLoop]: Abstraction has 2171 states and 2610 transitions. [2020-08-22 04:33:21,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:33:21,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 2610 transitions. [2020-08-22 04:33:21,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 04:33:21,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:33:21,482 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:33:21,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:33:21,482 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:33:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:33:21,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1229554551, now seen corresponding path program 1 times [2020-08-22 04:33:21,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:33:21,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355954579] [2020-08-22 04:33:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:33:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,843 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:33:21,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:33:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:33:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:33:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:33:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:33:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:33:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:33:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:21,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:33:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 04:33:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 04:33:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:33:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:33:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 04:33:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 04:33:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 04:33:22,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355954579] [2020-08-22 04:33:22,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:33:22,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:33:22,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500681892] [2020-08-22 04:33:22,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:33:22,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:33:22,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:33:22,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:33:22,157 INFO L87 Difference]: Start difference. First operand 2171 states and 2610 transitions. Second operand 12 states. [2020-08-22 04:33:22,553 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:33:23,420 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:33:23,699 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:23,969 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:24,209 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:24,606 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:33:24,834 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:25,941 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:26,276 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:26,551 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:33:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:33:29,416 INFO L93 Difference]: Finished difference Result 5443 states and 7067 transitions. [2020-08-22 04:33:29,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 04:33:29,416 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 172 [2020-08-22 04:33:29,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:33:29,442 INFO L225 Difference]: With dead ends: 5443 [2020-08-22 04:33:29,442 INFO L226 Difference]: Without dead ends: 3860 [2020-08-22 04:33:29,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 64 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-22 04:33:29,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2020-08-22 04:33:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3137. [2020-08-22 04:33:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3137 states. [2020-08-22 04:33:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 3842 transitions. [2020-08-22 04:33:30,003 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 3842 transitions. Word has length 172 [2020-08-22 04:33:30,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:33:30,003 INFO L479 AbstractCegarLoop]: Abstraction has 3137 states and 3842 transitions. [2020-08-22 04:33:30,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:33:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 3842 transitions. [2020-08-22 04:33:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 04:33:30,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:33:30,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:33:30,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:33:30,014 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:33:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:33:30,014 INFO L82 PathProgramCache]: Analyzing trace with hash 138099704, now seen corresponding path program 1 times [2020-08-22 04:33:30,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:33:30,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094819980] [2020-08-22 04:33:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:33:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,297 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:33:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:33:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:33:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:33:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:33:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:33:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:33:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:33:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:33:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 04:33:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 04:33:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 04:33:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:33:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:33:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:33:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:33:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 04:33:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 04:33:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:33:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-08-22 04:33:30,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094819980] [2020-08-22 04:33:30,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:33:30,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:33:30,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480245111] [2020-08-22 04:33:30,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:33:30,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:33:30,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:33:30,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:33:30,611 INFO L87 Difference]: Start difference. First operand 3137 states and 3842 transitions. Second operand 10 states. [2020-08-22 04:33:32,002 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:33:32,257 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191