/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=0.4 --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 05:21:10,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:21:10,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:21:10,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:21:10,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:21:10,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:21:10,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:21:10,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:21:10,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:21:10,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:21:10,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:21:10,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:21:10,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:21:10,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:21:10,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:21:10,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:21:10,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:21:10,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:21:10,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:21:10,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:21:10,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:21:10,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:21:10,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:21:10,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:21:10,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:21:10,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:21:10,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:21:10,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:21:10,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:21:10,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:21:10,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:21:10,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:21:10,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:21:10,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:21:10,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:21:10,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:21:10,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:21:10,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:21:10,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:21:10,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:21:10,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:21:10,905 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 05:21:10,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:21:10,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:21:10,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:21:10,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:21:10,930 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:21:10,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:21:10,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:21:10,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:21:10,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:21:10,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:21:10,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:21:10,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:21:10,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:21:10,932 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:21:10,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:21:10,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:21:10,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:21:10,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:21:10,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:21:10,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:21:10,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:21:10,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:21:10,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:21:10,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:21:10,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:21:10,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:21:10,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:21:10,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:21:10,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:21:10,935 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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-08-22 05:21:11,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:21:11,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:21:11,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:21:11,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:21:11,285 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:21:11,286 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-22 05:21:11,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd608ce21/5169b08670ca494abc3240f7a4a754be/FLAG99f44dcbe [2020-08-22 05:21:11,894 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:21:11,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-22 05:21:11,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd608ce21/5169b08670ca494abc3240f7a4a754be/FLAG99f44dcbe [2020-08-22 05:21:12,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd608ce21/5169b08670ca494abc3240f7a4a754be [2020-08-22 05:21:12,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:21:12,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:21:12,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:21:12,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:21:12,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:21:12,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:21:12" (1/1) ... [2020-08-22 05:21:12,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ac3c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:12, skipping insertion in model container [2020-08-22 05:21:12,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:21:12" (1/1) ... [2020-08-22 05:21:12,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:21:12,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:21:12,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:21:12,821 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:21:12,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:21:12,934 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:21:12,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:12 WrapperNode [2020-08-22 05:21:12,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:21:12,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:21:12,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:21:12,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:21:12,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:12" (1/1) ... [2020-08-22 05:21:12,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:12" (1/1) ... [2020-08-22 05:21:12,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:12" (1/1) ... [2020-08-22 05:21:12,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:12" (1/1) ... [2020-08-22 05:21:13,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:12" (1/1) ... [2020-08-22 05:21:13,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:12" (1/1) ... [2020-08-22 05:21:13,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:12" (1/1) ... [2020-08-22 05:21:13,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:21:13,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:21:13,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:21:13,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:21:13,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:12" (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 05:21:13,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:21:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:21:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:21:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:21:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:21:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:21:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:21:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:21:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:21:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:21:13,179 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:21:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:21:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:21:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:21:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:21:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:21:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:21:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:21:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:21:13,181 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:21:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:21:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:21:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:21:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:21:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:21:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:21:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 05:21:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:21:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:21:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:21:13,183 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:21:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 05:21:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:21:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 05:21:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:21:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:21:13,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:21:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:21:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:21:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:21:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 05:21:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 05:21:13,185 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:21:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:21:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:21:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:21:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:21:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:21:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:21:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:21:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:21:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:21:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:21:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:21:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:21:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:21:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:21:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:21:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:21:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:21:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:21:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:21:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:21:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:21:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:21:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:21:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:21:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:21:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:21:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:21:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:21:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:21:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:21:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:21:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:21:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:21:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:21:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:21:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:21:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:21:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 05:21:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:21:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 05:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 05:21:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 05:21:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:21:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 05:21:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:21:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:21:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:21:14,300 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:21:14,300 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:21:14,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:21:14 BoogieIcfgContainer [2020-08-22 05:21:14,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:21:14,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:21:14,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:21:14,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:21:14,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:21:12" (1/3) ... [2020-08-22 05:21:14,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cc04e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:21:14, skipping insertion in model container [2020-08-22 05:21:14,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:12" (2/3) ... [2020-08-22 05:21:14,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cc04e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:21:14, skipping insertion in model container [2020-08-22 05:21:14,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:21:14" (3/3) ... [2020-08-22 05:21:14,314 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2020-08-22 05:21:14,324 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:21:14,332 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:21:14,348 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:21:14,375 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:21:14,375 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:21:14,375 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:21:14,376 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:21:14,376 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:21:14,376 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:21:14,376 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:21:14,376 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:21:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-22 05:21:14,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 05:21:14,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:14,415 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 05:21:14,415 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:14,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:14,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2020-08-22 05:21:14,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:14,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364706375] [2020-08-22 05:21:14,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:15,193 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:15,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:15,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:15,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:15,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:15,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:21:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:15,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:21:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:15,275 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 05:21:15,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364706375] [2020-08-22 05:21:15,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:15,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:21:15,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371464823] [2020-08-22 05:21:15,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:21:15,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:15,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:21:15,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:21:15,311 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2020-08-22 05:21:16,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:16,582 INFO L93 Difference]: Finished difference Result 365 states and 474 transitions. [2020-08-22 05:21:16,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:21:16,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 05:21:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:16,599 INFO L225 Difference]: With dead ends: 365 [2020-08-22 05:21:16,599 INFO L226 Difference]: Without dead ends: 197 [2020-08-22 05:21:16,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:21:16,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-08-22 05:21:16,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-08-22 05:21:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 05:21:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-22 05:21:16,721 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2020-08-22 05:21:16,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:16,722 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-22 05:21:16,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:21:16,722 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-22 05:21:16,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 05:21:16,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:16,726 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 05:21:16,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:21:16,726 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:16,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:16,727 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2020-08-22 05:21:16,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:16,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950409761] [2020-08-22 05:21:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,044 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:21:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:21:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,116 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 05:21:17,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950409761] [2020-08-22 05:21:17,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:17,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:21:17,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120507604] [2020-08-22 05:21:17,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:21:17,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:17,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:21:17,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:21:17,121 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2020-08-22 05:21:17,554 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:18,620 INFO L93 Difference]: Finished difference Result 292 states and 357 transitions. [2020-08-22 05:21:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:21:18,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 05:21:18,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:18,627 INFO L225 Difference]: With dead ends: 292 [2020-08-22 05:21:18,627 INFO L226 Difference]: Without dead ends: 181 [2020-08-22 05:21:18,631 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 05:21:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-22 05:21:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2020-08-22 05:21:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-22 05:21:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-22 05:21:18,678 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2020-08-22 05:21:18,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:18,678 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-22 05:21:18,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:21:18,678 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-22 05:21:18,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 05:21:18,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:18,681 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 05:21:18,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:21:18,681 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:18,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:18,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2020-08-22 05:21:18,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:18,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968098828] [2020-08-22 05:21:18,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:18,978 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:18,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:19,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:19,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:19,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:19,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:19,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:21:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:19,041 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 05:21:19,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968098828] [2020-08-22 05:21:19,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:19,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:21:19,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679458089] [2020-08-22 05:21:19,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:21:19,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:19,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:21:19,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:21:19,044 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 8 states. [2020-08-22 05:21:19,338 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:19,649 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:19,863 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:20,103 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:20,814 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:23,077 INFO L93 Difference]: Finished difference Result 510 states and 633 transitions. [2020-08-22 05:21:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:21:23,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 05:21:23,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:23,083 INFO L225 Difference]: With dead ends: 510 [2020-08-22 05:21:23,083 INFO L226 Difference]: Without dead ends: 384 [2020-08-22 05:21:23,085 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 05:21:23,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-08-22 05:21:23,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 318. [2020-08-22 05:21:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-08-22 05:21:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2020-08-22 05:21:23,186 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 51 [2020-08-22 05:21:23,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:23,187 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2020-08-22 05:21:23,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:21:23,187 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2020-08-22 05:21:23,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 05:21:23,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:23,190 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 05:21:23,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:21:23,190 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:23,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:23,191 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2020-08-22 05:21:23,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:23,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239393779] [2020-08-22 05:21:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:23,493 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:23,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:23,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:23,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:23,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:23,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:23,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:21:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:23,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:21:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:23,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:21:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:23,604 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 05:21:23,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239393779] [2020-08-22 05:21:23,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:23,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 05:21:23,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157583786] [2020-08-22 05:21:23,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:21:23,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:23,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:21:23,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:21:23,606 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand 12 states. [2020-08-22 05:21:23,958 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:24,254 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:24,530 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:24,751 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:25,248 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:26,057 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:26,458 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:26,799 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:27,045 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:27,333 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:27,730 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:28,092 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:28,508 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:30,888 INFO L93 Difference]: Finished difference Result 1305 states and 1782 transitions. [2020-08-22 05:21:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 05:21:30,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 05:21:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:30,899 INFO L225 Difference]: With dead ends: 1305 [2020-08-22 05:21:30,900 INFO L226 Difference]: Without dead ends: 1011 [2020-08-22 05:21:30,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 05:21:30,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-08-22 05:21:31,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 910. [2020-08-22 05:21:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-22 05:21:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1164 transitions. [2020-08-22 05:21:31,163 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1164 transitions. Word has length 57 [2020-08-22 05:21:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:31,164 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1164 transitions. [2020-08-22 05:21:31,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:21:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1164 transitions. [2020-08-22 05:21:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 05:21:31,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:31,169 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 05:21:31,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:21:31,170 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:31,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:31,170 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2020-08-22 05:21:31,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:31,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693397326] [2020-08-22 05:21:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:31,431 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:31,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:31,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:31,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:31,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:31,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:31,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:21:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:31,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:21:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:31,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:21:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:31,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 05:21:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:31,502 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 05:21:31,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693397326] [2020-08-22 05:21:31,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:31,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:21:31,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534307768] [2020-08-22 05:21:31,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:21:31,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:31,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:21:31,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:21:31,505 INFO L87 Difference]: Start difference. First operand 910 states and 1164 transitions. Second operand 6 states. [2020-08-22 05:21:31,770 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:33,768 INFO L93 Difference]: Finished difference Result 2165 states and 2945 transitions. [2020-08-22 05:21:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:21:33,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 05:21:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:33,780 INFO L225 Difference]: With dead ends: 2165 [2020-08-22 05:21:33,780 INFO L226 Difference]: Without dead ends: 1279 [2020-08-22 05:21:33,784 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 05:21:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-22 05:21:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1192. [2020-08-22 05:21:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-08-22 05:21:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1486 transitions. [2020-08-22 05:21:34,019 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1486 transitions. Word has length 61 [2020-08-22 05:21:34,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:34,020 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1486 transitions. [2020-08-22 05:21:34,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:21:34,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1486 transitions. [2020-08-22 05:21:34,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 05:21:34,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:34,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:34,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:21:34,026 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:34,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:34,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2051159117, now seen corresponding path program 1 times [2020-08-22 05:21:34,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:34,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542515176] [2020-08-22 05:21:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,515 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:34,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:21:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 05:21:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 05:21:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 05:21:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:34,690 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 05:21:34,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542515176] [2020-08-22 05:21:34,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:34,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:21:34,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391718565] [2020-08-22 05:21:34,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:21:34,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:34,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:21:34,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:21:34,694 INFO L87 Difference]: Start difference. First operand 1192 states and 1486 transitions. Second operand 10 states. [2020-08-22 05:21:35,221 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 05:21:35,720 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:37,986 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:40,491 INFO L93 Difference]: Finished difference Result 2279 states and 2961 transitions. [2020-08-22 05:21:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 05:21:40,492 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 05:21:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:40,500 INFO L225 Difference]: With dead ends: 2279 [2020-08-22 05:21:40,501 INFO L226 Difference]: Without dead ends: 1402 [2020-08-22 05:21:40,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 05:21:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-08-22 05:21:40,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1305. [2020-08-22 05:21:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-22 05:21:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1607 transitions. [2020-08-22 05:21:40,759 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1607 transitions. Word has length 88 [2020-08-22 05:21:40,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:40,760 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1607 transitions. [2020-08-22 05:21:40,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:21:40,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1607 transitions. [2020-08-22 05:21:40,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:21:40,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:40,770 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 05:21:40,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:21:40,770 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:40,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:40,771 INFO L82 PathProgramCache]: Analyzing trace with hash -923959180, now seen corresponding path program 1 times [2020-08-22 05:21:40,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:40,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386181306] [2020-08-22 05:21:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,087 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:41,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:21:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:21:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 05:21:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 05:21:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:21:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 05:21:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 05:21:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:41,311 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 05:21:41,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386181306] [2020-08-22 05:21:41,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:41,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 05:21:41,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27847495] [2020-08-22 05:21:41,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:21:41,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:41,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:21:41,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:21:41,319 INFO L87 Difference]: Start difference. First operand 1305 states and 1607 transitions. Second operand 9 states. [2020-08-22 05:21:42,156 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:42,360 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:42,611 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:43,888 INFO L93 Difference]: Finished difference Result 2395 states and 3094 transitions. [2020-08-22 05:21:43,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:21:43,889 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 150 [2020-08-22 05:21:43,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:43,897 INFO L225 Difference]: With dead ends: 2395 [2020-08-22 05:21:43,898 INFO L226 Difference]: Without dead ends: 1428 [2020-08-22 05:21:43,901 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 05:21:43,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2020-08-22 05:21:44,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1305. [2020-08-22 05:21:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-22 05:21:44,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1605 transitions. [2020-08-22 05:21:44,183 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1605 transitions. Word has length 150 [2020-08-22 05:21:44,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:44,184 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1605 transitions. [2020-08-22 05:21:44,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:21:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1605 transitions. [2020-08-22 05:21:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:21:44,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:44,189 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 05:21:44,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:21:44,189 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:44,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1752033202, now seen corresponding path program 1 times [2020-08-22 05:21:44,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:44,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016488999] [2020-08-22 05:21:44,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,514 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:44,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:21:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:21:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 05:21:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 05:21:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:21:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 05:21:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 05:21:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,813 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 05:21:44,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016488999] [2020-08-22 05:21:44,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:44,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 05:21:44,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895186826] [2020-08-22 05:21:44,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 05:21:44,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:44,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 05:21:44,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-22 05:21:44,816 INFO L87 Difference]: Start difference. First operand 1305 states and 1605 transitions. Second operand 15 states. [2020-08-22 05:21:45,206 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:45,892 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:47,246 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:47,600 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:47,877 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:48,177 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:48,479 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:48,741 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:49,240 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-22 05:21:49,708 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-22 05:21:50,509 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:50,783 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:51,051 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:51,296 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:52,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:52,339 INFO L93 Difference]: Finished difference Result 3652 states and 4736 transitions. [2020-08-22 05:21:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 05:21:52,341 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-08-22 05:21:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:52,356 INFO L225 Difference]: With dead ends: 3652 [2020-08-22 05:21:52,356 INFO L226 Difference]: Without dead ends: 2371 [2020-08-22 05:21:52,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 05:21:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-08-22 05:21:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2171. [2020-08-22 05:21:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2171 states. [2020-08-22 05:21:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 2620 transitions. [2020-08-22 05:21:52,815 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 2620 transitions. Word has length 150 [2020-08-22 05:21:52,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:52,816 INFO L479 AbstractCegarLoop]: Abstraction has 2171 states and 2620 transitions. [2020-08-22 05:21:52,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 05:21:52,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 2620 transitions. [2020-08-22 05:21:52,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 05:21:52,824 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:52,824 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 05:21:52,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:21:52,825 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:52,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1447990305, now seen corresponding path program 1 times [2020-08-22 05:21:52,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:52,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167923455] [2020-08-22 05:21:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,069 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:53,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:21:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:21:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 05:21:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 05:21:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 05:21:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:21:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-22 05:21:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 05:21:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:53,382 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 05:21:53,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167923455] [2020-08-22 05:21:53,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:53,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 05:21:53,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305398297] [2020-08-22 05:21:53,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:21:53,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:53,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:21:53,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:21:53,385 INFO L87 Difference]: Start difference. First operand 2171 states and 2620 transitions. Second operand 11 states. [2020-08-22 05:21:54,797 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:55,047 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:21:55,286 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:55,525 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:57,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:57,025 INFO L93 Difference]: Finished difference Result 4828 states and 6299 transitions. [2020-08-22 05:21:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 05:21:57,026 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 150 [2020-08-22 05:21:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:57,042 INFO L225 Difference]: With dead ends: 4828 [2020-08-22 05:21:57,042 INFO L226 Difference]: Without dead ends: 2681 [2020-08-22 05:21:57,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:21:57,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2020-08-22 05:21:57,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2211. [2020-08-22 05:21:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2211 states. [2020-08-22 05:21:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2664 transitions. [2020-08-22 05:21:57,402 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2664 transitions. Word has length 150 [2020-08-22 05:21:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:57,402 INFO L479 AbstractCegarLoop]: Abstraction has 2211 states and 2664 transitions. [2020-08-22 05:21:57,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:21:57,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2664 transitions. [2020-08-22 05:21:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 05:21:57,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:57,408 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 05:21:57,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:21:57,409 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:57,409 INFO L82 PathProgramCache]: Analyzing trace with hash -547203946, now seen corresponding path program 1 times [2020-08-22 05:21:57,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:57,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032199900] [2020-08-22 05:21:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,698 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:57,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:21:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:21:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 05:21:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 05:21:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-22 05:21:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:21:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 05:21:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-22 05:21:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:57,935 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 05:21:57,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032199900] [2020-08-22 05:21:57,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:57,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 05:21:57,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756347] [2020-08-22 05:21:57,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:21:57,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:57,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:21:57,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:21:57,937 INFO L87 Difference]: Start difference. First operand 2211 states and 2664 transitions. Second operand 11 states. [2020-08-22 05:21:58,363 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:22:00,595 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:22:00,881 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:22:01,198 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:22:01,611 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:22:01,897 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:02,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:22:02,702 INFO L93 Difference]: Finished difference Result 2688 states and 3522 transitions. [2020-08-22 05:22:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 05:22:02,702 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-22 05:22:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:22:02,718 INFO L225 Difference]: With dead ends: 2688 [2020-08-22 05:22:02,719 INFO L226 Difference]: Without dead ends: 2685 [2020-08-22 05:22:02,720 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 05:22:02,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2020-08-22 05:22:03,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2211. [2020-08-22 05:22:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2211 states. [2020-08-22 05:22:03,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2654 transitions. [2020-08-22 05:22:03,065 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2654 transitions. Word has length 154 [2020-08-22 05:22:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:22:03,067 INFO L479 AbstractCegarLoop]: Abstraction has 2211 states and 2654 transitions. [2020-08-22 05:22:03,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:22:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2654 transitions. [2020-08-22 05:22:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-22 05:22:03,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:22:03,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:22:03,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:22:03,075 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:22:03,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:22:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash 198178896, now seen corresponding path program 1 times [2020-08-22 05:22:03,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:22:03,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647146914] [2020-08-22 05:22:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:22:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,438 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:22:03,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:22:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:22:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:22:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:22:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:22:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:22:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 05:22:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 05:22:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:22:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:22:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 05:22:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 05:22:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:03,674 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 05:22:03,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647146914] [2020-08-22 05:22:03,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:22:03,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:22:03,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271414631] [2020-08-22 05:22:03,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:22:03,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:22:03,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:22:03,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:22:03,677 INFO L87 Difference]: Start difference. First operand 2211 states and 2654 transitions. Second operand 12 states. [2020-08-22 05:22:04,123 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:04,368 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:04,583 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:05,283 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:05,543 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:05,797 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:22:07,191 INFO L93 Difference]: Finished difference Result 4129 states and 5110 transitions. [2020-08-22 05:22:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:22:07,192 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 168 [2020-08-22 05:22:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:22:07,202 INFO L225 Difference]: With dead ends: 4129 [2020-08-22 05:22:07,203 INFO L226 Difference]: Without dead ends: 1942 [2020-08-22 05:22:07,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:22:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2020-08-22 05:22:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1843. [2020-08-22 05:22:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-08-22 05:22:07,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2174 transitions. [2020-08-22 05:22:07,453 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2174 transitions. Word has length 168 [2020-08-22 05:22:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:22:07,453 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2174 transitions. [2020-08-22 05:22:07,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:22:07,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2174 transitions. [2020-08-22 05:22:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 05:22:07,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:22:07,460 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 05:22:07,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:22:07,460 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:22:07,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:22:07,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1229554551, now seen corresponding path program 1 times [2020-08-22 05:22:07,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:22:07,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429853115] [2020-08-22 05:22:07,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:22:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,749 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:22:07,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:22:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:22:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:22:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:22:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:22:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:22:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:22:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 05:22:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 05:22:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:22:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:22:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-22 05:22:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 05:22:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:07,975 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 05:22:07,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429853115] [2020-08-22 05:22:07,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:22:07,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:22:07,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389063814] [2020-08-22 05:22:07,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:22:07,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:22:07,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:22:07,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:22:07,978 INFO L87 Difference]: Start difference. First operand 1843 states and 2174 transitions. Second operand 12 states. [2020-08-22 05:22:08,322 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187