/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:22:06,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:22:06,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:22:06,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:22:06,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:22:06,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:22:06,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:22:06,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:22:06,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:22:06,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:22:06,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:22:06,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:22:06,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:22:06,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:22:06,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:22:06,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:22:06,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:22:06,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:22:06,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:22:06,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:22:06,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:22:06,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:22:06,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:22:06,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:22:06,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:22:06,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:22:06,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:22:06,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:22:06,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:22:06,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:22:06,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:22:06,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:22:06,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:22:06,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:22:06,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:22:06,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:22:06,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:22:06,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:22:06,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:22:06,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:22:06,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:22:06,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:22:06,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:22:06,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:22:06,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:22:06,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:22:06,964 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:22:06,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:22:06,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:22:06,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:22:06,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:22:06,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:22:06,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:22:06,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:22:06,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:22:06,967 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:22:06,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:22:06,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:22:06,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:22:06,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:22:06,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:22:06,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:22:06,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:22:06,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:22:06,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:22:06,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:22:06,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:22:06,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:22:06,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:22:06,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:22:06,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:22:06,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:22:07,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:22:07,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:22:07,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:22:07,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:22:07,286 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:22:07,286 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 23:22:07,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9b7646be/6abda072e3ae4e1abd47e135905637d7/FLAGf4e985777 [2020-08-18 23:22:07,931 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:22:07,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 23:22:07,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9b7646be/6abda072e3ae4e1abd47e135905637d7/FLAGf4e985777 [2020-08-18 23:22:08,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9b7646be/6abda072e3ae4e1abd47e135905637d7 [2020-08-18 23:22:08,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:22:08,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:22:08,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:22:08,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:22:08,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:22:08,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:22:08" (1/1) ... [2020-08-18 23:22:08,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194f9c9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:08, skipping insertion in model container [2020-08-18 23:22:08,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:22:08" (1/1) ... [2020-08-18 23:22:08,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:22:08,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:22:08,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:22:08,803 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:22:08,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:22:09,004 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:22:09,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09 WrapperNode [2020-08-18 23:22:09,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:22:09,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:22:09,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:22:09,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:22:09,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... [2020-08-18 23:22:09,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:22:09,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:22:09,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:22:09,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:22:09,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:22:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:22:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:22:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 23:22:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 23:22:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 23:22:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 23:22:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 23:22:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 23:22:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 23:22:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 23:22:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 23:22:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 23:22:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 23:22:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 23:22:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 23:22:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:22:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 23:22:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 23:22:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 23:22:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 23:22:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 23:22:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 23:22:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 23:22:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 23:22:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 23:22:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 23:22:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 23:22:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 23:22:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 23:22:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 23:22:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 23:22:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:22:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 23:22:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 23:22:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 23:22:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 23:22:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 23:22:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 23:22:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 23:22:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 23:22:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 23:22:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 23:22:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:22:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:22:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 23:22:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 23:22:09,177 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 23:22:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 23:22:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 23:22:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 23:22:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 23:22:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 23:22:09,178 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 23:22:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:22:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 23:22:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 23:22:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 23:22:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 23:22:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 23:22:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 23:22:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 23:22:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 23:22:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 23:22:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 23:22:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:22:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 23:22:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 23:22:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 23:22:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 23:22:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 23:22:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:22:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:22:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 23:22:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:22:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:22:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:22:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:22:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 23:22:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:22:09,182 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 23:22:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 23:22:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:22:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 23:22:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 23:22:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 23:22:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 23:22:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 23:22:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 23:22:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 23:22:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 23:22:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 23:22:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 23:22:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 23:22:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 23:22:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 23:22:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:22:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:22:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:22:10,391 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:22:10,391 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:22:10,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:22:10 BoogieIcfgContainer [2020-08-18 23:22:10,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:22:10,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:22:10,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:22:10,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:22:10,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:22:08" (1/3) ... [2020-08-18 23:22:10,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d243c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:22:10, skipping insertion in model container [2020-08-18 23:22:10,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:22:09" (2/3) ... [2020-08-18 23:22:10,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d243c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:22:10, skipping insertion in model container [2020-08-18 23:22:10,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:22:10" (3/3) ... [2020-08-18 23:22:10,406 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-18 23:22:10,416 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:22:10,424 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:22:10,438 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:22:10,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:22:10,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:22:10,460 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:22:10,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:22:10,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:22:10,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:22:10,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:22:10,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:22:10,487 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-18 23:22:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 23:22:10,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:10,500 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] [2020-08-18 23:22:10,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:10,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:10,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-18 23:22:10,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:10,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598329836] [2020-08-18 23:22:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,163 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:11,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 23:22:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:22:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:22:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:11,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598329836] [2020-08-18 23:22:11,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:11,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:22:11,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105915857] [2020-08-18 23:22:11,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:22:11,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:11,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:22:11,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:22:11,286 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-18 23:22:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:12,613 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-18 23:22:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:22:12,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 23:22:12,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:12,632 INFO L225 Difference]: With dead ends: 350 [2020-08-18 23:22:12,632 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 23:22:12,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:22:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 23:22:12,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-18 23:22:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 23:22:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-18 23:22:12,744 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-18 23:22:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:12,744 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-18 23:22:12,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:22:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-18 23:22:12,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 23:22:12,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:12,752 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] [2020-08-18 23:22:12,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:22:12,753 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:12,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:12,753 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-18 23:22:12,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:12,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355895973] [2020-08-18 23:22:12,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,119 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:13,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:22:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:22:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 23:22:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:13,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355895973] [2020-08-18 23:22:13,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:13,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:22:13,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595223862] [2020-08-18 23:22:13,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:22:13,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:13,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:22:13,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:22:13,207 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-18 23:22:13,620 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:14,611 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-18 23:22:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 23:22:14,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 23:22:14,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:14,616 INFO L225 Difference]: With dead ends: 279 [2020-08-18 23:22:14,617 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 23:22:14,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:22:14,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 23:22:14,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 23:22:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 23:22:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-18 23:22:14,657 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-18 23:22:14,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:14,658 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-18 23:22:14,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:22:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-18 23:22:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 23:22:14,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:14,660 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] [2020-08-18 23:22:14,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:22:14,661 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:14,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:14,661 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-18 23:22:14,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:14,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513440356] [2020-08-18 23:22:14,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:15,039 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:15,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:15,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:15,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:15,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:15,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 23:22:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 23:22:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 23:22:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:15,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513440356] [2020-08-18 23:22:15,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:15,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:22:15,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724904443] [2020-08-18 23:22:15,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:22:15,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:15,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:22:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:22:15,164 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-18 23:22:15,464 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:15,758 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:16,008 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:16,254 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:17,653 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-18 23:22:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:22:17,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 23:22:17,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:17,657 INFO L225 Difference]: With dead ends: 292 [2020-08-18 23:22:17,657 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 23:22:17,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:17,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 23:22:17,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 23:22:17,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 23:22:17,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-18 23:22:17,704 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-18 23:22:17,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:17,704 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-18 23:22:17,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:22:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-18 23:22:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-18 23:22:17,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:17,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:17,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:22:17,708 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:17,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-18 23:22:17,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:17,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670433488] [2020-08-18 23:22:17,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,001 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:18,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:22:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 23:22:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 23:22:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 23:22:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:18,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670433488] [2020-08-18 23:22:18,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:18,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:22:18,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547937733] [2020-08-18 23:22:18,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:22:18,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:18,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:22:18,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:22:18,171 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-18 23:22:18,473 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:19,757 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:20,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:20,564 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-18 23:22:20,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:22:20,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-18 23:22:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:20,568 INFO L225 Difference]: With dead ends: 407 [2020-08-18 23:22:20,569 INFO L226 Difference]: Without dead ends: 287 [2020-08-18 23:22:20,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:22:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-18 23:22:20,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-18 23:22:20,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 23:22:20,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-18 23:22:20,622 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-18 23:22:20,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:20,623 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-18 23:22:20,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:22:20,623 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-18 23:22:20,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 23:22:20,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:20,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:20,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:22:20,625 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:20,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:20,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-18 23:22:20,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:20,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752325581] [2020-08-18 23:22:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,923 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:20,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 23:22:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:20,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:21,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:21,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:21,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 23:22:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:21,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 23:22:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:21,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 23:22:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:21,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752325581] [2020-08-18 23:22:21,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:21,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:22:21,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509916349] [2020-08-18 23:22:21,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:22:21,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:21,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:22:21,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:22:21,065 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-18 23:22:21,378 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:22,730 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:23,037 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:23,315 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:23,555 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:24,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:24,494 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-18 23:22:24,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 23:22:24,494 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-18 23:22:24,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:24,499 INFO L225 Difference]: With dead ends: 641 [2020-08-18 23:22:24,499 INFO L226 Difference]: Without dead ends: 421 [2020-08-18 23:22:24,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:22:24,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-18 23:22:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-18 23:22:24,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-18 23:22:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-18 23:22:24,574 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-18 23:22:24,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:24,575 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-18 23:22:24,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:22:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-18 23:22:24,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 23:22:24,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:24,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:24,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:22:24,578 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:24,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:24,578 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-18 23:22:24,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:24,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953073049] [2020-08-18 23:22:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,886 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:24,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:22:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 23:22:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:24,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 23:22:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:25,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 23:22:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:25,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953073049] [2020-08-18 23:22:25,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:25,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 23:22:25,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013636076] [2020-08-18 23:22:25,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 23:22:25,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:25,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 23:22:25,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 23:22:25,017 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-18 23:22:25,431 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:25,929 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:27,500 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:29,620 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-18 23:22:29,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 23:22:29,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 23:22:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:29,628 INFO L225 Difference]: With dead ends: 980 [2020-08-18 23:22:29,628 INFO L226 Difference]: Without dead ends: 749 [2020-08-18 23:22:29,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 23:22:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-18 23:22:29,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-18 23:22:29,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 23:22:29,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-18 23:22:29,786 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-18 23:22:29,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:29,787 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-18 23:22:29,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 23:22:29,787 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-18 23:22:29,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 23:22:29,789 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:29,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:29,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:22:29,790 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:29,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-18 23:22:29,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:29,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376815167] [2020-08-18 23:22:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,023 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:30,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:22:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 23:22:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 23:22:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 23:22:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:30,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376815167] [2020-08-18 23:22:30,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:30,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 23:22:30,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940455684] [2020-08-18 23:22:30,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 23:22:30,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:30,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 23:22:30,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 23:22:30,195 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-18 23:22:31,031 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:31,270 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:31,542 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:32,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:32,847 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-18 23:22:32,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:22:32,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 23:22:32,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:32,854 INFO L225 Difference]: With dead ends: 1250 [2020-08-18 23:22:32,854 INFO L226 Difference]: Without dead ends: 723 [2020-08-18 23:22:32,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:32,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-18 23:22:33,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-18 23:22:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 23:22:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-18 23:22:33,043 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-18 23:22:33,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:33,044 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-18 23:22:33,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 23:22:33,044 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-18 23:22:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 23:22:33,047 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:33,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:33,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:22:33,047 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:33,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:33,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-18 23:22:33,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:33,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422258495] [2020-08-18 23:22:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,356 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:33,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:22:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 23:22:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 23:22:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 23:22:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:33,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422258495] [2020-08-18 23:22:33,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:33,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 23:22:33,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938300667] [2020-08-18 23:22:33,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:22:33,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:33,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:22:33,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:33,536 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-18 23:22:34,025 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:34,259 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:34,496 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:35,186 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:35,414 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:22:35,663 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:35,897 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:37,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:37,151 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-18 23:22:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 23:22:37,152 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-18 23:22:37,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:37,158 INFO L225 Difference]: With dead ends: 1343 [2020-08-18 23:22:37,158 INFO L226 Difference]: Without dead ends: 689 [2020-08-18 23:22:37,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 23:22:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-18 23:22:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-18 23:22:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 23:22:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-18 23:22:37,350 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-18 23:22:37,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:37,351 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-18 23:22:37,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:22:37,351 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-18 23:22:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 23:22:37,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:37,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:37,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:22:37,358 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:37,359 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-18 23:22:37,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:37,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546210058] [2020-08-18 23:22:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,670 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:37,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 23:22:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 23:22:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 23:22:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 23:22:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:22:37,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546210058] [2020-08-18 23:22:37,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:22:37,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 23:22:37,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246244918] [2020-08-18 23:22:37,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:22:37,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:37,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:22:37,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:22:37,848 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-18 23:22:38,661 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:38,893 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:39,121 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:40,131 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:40,753 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:41,065 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:41,330 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:22:42,113 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:42,479 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:43,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:43,099 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-18 23:22:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 23:22:43,100 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-18 23:22:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:43,106 INFO L225 Difference]: With dead ends: 1307 [2020-08-18 23:22:43,106 INFO L226 Difference]: Without dead ends: 682 [2020-08-18 23:22:43,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-18 23:22:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-18 23:22:43,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-18 23:22:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 23:22:43,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-18 23:22:43,240 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-18 23:22:43,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:43,241 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-18 23:22:43,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:22:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-18 23:22:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 23:22:43,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:43,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:43,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:22:43,246 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:43,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:43,246 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-18 23:22:43,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:43,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993504159] [2020-08-18 23:22:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,586 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:43,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:22:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:22:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 23:22:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 23:22:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:22:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 23:22:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 23:22:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 23:22:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 23:22:43,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993504159] [2020-08-18 23:22:43,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:22:43,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 23:22:43,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816585721] [2020-08-18 23:22:43,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 23:22:43,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:43,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 23:22:43,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 23:22:43,831 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-18 23:22:45,153 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:45,412 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 23:22:45,651 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:45,889 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:46,916 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-18 23:22:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:22:46,917 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-18 23:22:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:46,922 INFO L225 Difference]: With dead ends: 1216 [2020-08-18 23:22:46,922 INFO L226 Difference]: Without dead ends: 670 [2020-08-18 23:22:46,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 23:22:46,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-18 23:22:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-18 23:22:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 23:22:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-18 23:22:47,043 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-18 23:22:47,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:47,044 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-18 23:22:47,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 23:22:47,044 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-18 23:22:47,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 23:22:47,046 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:47,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:47,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:22:47,047 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:47,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-18 23:22:47,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:47,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475155367] [2020-08-18 23:22:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,392 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:47,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 23:22:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:22:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 23:22:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 23:22:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:22:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 23:22:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 23:22:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 23:22:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 23:22:47,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475155367] [2020-08-18 23:22:47,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:22:47,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 23:22:47,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298593457] [2020-08-18 23:22:47,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 23:22:47,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:47,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 23:22:47,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 23:22:47,667 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-18 23:22:48,214 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:48,483 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:48,722 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:49,340 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:49,571 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:49,788 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:50,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:50,895 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-18 23:22:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 23:22:50,896 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-18 23:22:50,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:50,900 INFO L225 Difference]: With dead ends: 1124 [2020-08-18 23:22:50,900 INFO L226 Difference]: Without dead ends: 573 [2020-08-18 23:22:50,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 23:22:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-18 23:22:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-18 23:22:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 23:22:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-18 23:22:51,003 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-18 23:22:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:51,003 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-18 23:22:51,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 23:22:51,004 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-18 23:22:51,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 23:22:51,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:51,007 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:51,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:22:51,007 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:51,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:51,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-18 23:22:51,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:51,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436027824] [2020-08-18 23:22:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,262 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:51,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:22:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:22:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 23:22:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 23:22:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:22:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 23:22:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 23:22:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 23:22:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:51,445 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 23:22:51,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436027824] [2020-08-18 23:22:51,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:22:51,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 23:22:51,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253089735] [2020-08-18 23:22:51,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 23:22:51,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:51,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 23:22:51,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:22:51,447 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-18 23:22:52,018 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:22:52,629 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:53,564 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:54,048 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 23:22:54,506 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 23:22:54,722 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:22:56,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:22:56,282 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-18 23:22:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 23:22:56,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-18 23:22:56,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:22:56,290 INFO L225 Difference]: With dead ends: 1637 [2020-08-18 23:22:56,290 INFO L226 Difference]: Without dead ends: 1109 [2020-08-18 23:22:56,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-18 23:22:56,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-18 23:22:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-18 23:22:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-18 23:22:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-18 23:22:56,528 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-18 23:22:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:22:56,529 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-18 23:22:56,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 23:22:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-18 23:22:56,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 23:22:56,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:22:56,533 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:22:56,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:22:56,534 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:22:56,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:22:56,534 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-18 23:22:56,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:22:56,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094205162] [2020-08-18 23:22:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:22:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,831 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:22:56,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:22:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:22:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:22:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:22:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:22:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:22:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 23:22:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:22:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:22:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:22:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 23:22:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 23:22:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:22:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:22:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:22:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:56,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 23:22:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:57,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 23:22:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:57,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 23:22:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:22:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 23:22:57,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094205162] [2020-08-18 23:22:57,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:22:57,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 23:22:57,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458020600] [2020-08-18 23:22:57,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 23:22:57,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:22:57,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 23:22:57,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:22:57,081 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-18 23:22:57,768 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:22:58,023 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:58,266 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:22:58,900 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:23:00,065 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 23:23:00,424 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 23:23:00,716 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:23:00,980 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:23:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:23:03,114 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-18 23:23:03,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 23:23:03,115 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-18 23:23:03,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:23:03,122 INFO L225 Difference]: With dead ends: 2187 [2020-08-18 23:23:03,122 INFO L226 Difference]: Without dead ends: 1134 [2020-08-18 23:23:03,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-18 23:23:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-18 23:23:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-18 23:23:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-18 23:23:03,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-18 23:23:03,325 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-18 23:23:03,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:23:03,326 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-18 23:23:03,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 23:23:03,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-18 23:23:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 23:23:03,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:23:03,331 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:23:03,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 23:23:03,331 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:23:03,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:23:03,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-18 23:23:03,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:23:03,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626898082] [2020-08-18 23:23:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:23:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,627 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 23:23:03,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:23:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:23:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:23:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:23:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:23:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:23:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 23:23:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:23:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:23:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:23:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:23:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:23:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 23:23:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 23:23:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:23:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:23:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 23:23:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 23:23:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:23:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:23:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 23:23:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 23:23:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 23:23:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 23:23:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:23:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-18 23:23:03,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626898082] [2020-08-18 23:23:03,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:23:03,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 23:23:03,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421611462] [2020-08-18 23:23:03,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 23:23:03,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:23:03,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 23:23:03,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 23:23:03,957 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-18 23:23:04,454 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186