/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:20:39,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:20:39,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:20:39,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:20:39,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:20:39,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:20:39,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:20:39,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:20:39,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:20:39,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:20:39,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:20:39,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:20:39,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:20:39,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:20:39,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:20:39,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:20:39,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:20:39,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:20:39,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:20:39,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:20:39,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:20:39,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:20:39,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:20:39,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:20:39,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:20:39,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:20:39,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:20:39,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:20:39,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:20:39,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:20:39,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:20:39,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:20:39,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:20:39,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:20:39,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:20:39,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:20:39,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:20:39,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:20:39,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:20:39,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:20:39,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:20:39,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 01:20:39,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:20:39,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:20:39,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:20:39,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:20:39,897 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:20:39,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:20:39,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:20:39,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:20:39,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:20:39,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:20:39,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:20:39,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:20:39,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:20:39,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:20:39,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:20:39,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:20:39,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:20:39,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:20:39,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:20:39,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:20:39,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:20:39,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:20:39,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:20:39,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:20:39,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:20:39,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:20:39,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:20:39,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:20:39,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:20:39,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:20:40,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:20:40,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:20:40,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:20:40,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:20:40,299 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:20:40,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-22 01:20:40,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99111cd84/fa02d55b40f740468b82ea79bf9def6f/FLAGa399d579f [2020-08-22 01:20:40,996 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:20:40,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-22 01:20:41,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99111cd84/fa02d55b40f740468b82ea79bf9def6f/FLAGa399d579f [2020-08-22 01:20:41,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99111cd84/fa02d55b40f740468b82ea79bf9def6f [2020-08-22 01:20:41,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:20:41,233 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:20:41,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:20:41,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:20:41,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:20:41,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:20:41" (1/1) ... [2020-08-22 01:20:41,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a560c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:41, skipping insertion in model container [2020-08-22 01:20:41,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:20:41" (1/1) ... [2020-08-22 01:20:41,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:20:41,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:20:41,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:20:41,791 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:20:41,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:20:41,942 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:20:41,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:41 WrapperNode [2020-08-22 01:20:41,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:20:41,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:20:41,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:20:41,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:20:41,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:41" (1/1) ... [2020-08-22 01:20:41,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:41" (1/1) ... [2020-08-22 01:20:41,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:41" (1/1) ... [2020-08-22 01:20:41,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:41" (1/1) ... [2020-08-22 01:20:42,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:41" (1/1) ... [2020-08-22 01:20:42,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:41" (1/1) ... [2020-08-22 01:20:42,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:41" (1/1) ... [2020-08-22 01:20:42,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:20:42,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:20:42,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:20:42,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:20:42,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:20:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:20:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:20:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:20:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:20:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:20:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:20:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:20:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:20:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:20:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:20:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:20:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:20:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:20:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:20:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 01:20:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:20:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 01:20:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:20:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 01:20:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 01:20:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 01:20:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:20:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:20:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:20:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:20:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:20:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:20:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:20:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:20:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:20:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:20:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:20:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:20:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:20:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:20:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:20:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:20:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:20:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:20:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:20:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:20:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:20:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:20:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:20:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 01:20:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:20:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:20:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:20:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:20:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:20:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:20:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:20:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 01:20:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:20:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:20:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:20:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:20:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:20:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:20:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 01:20:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 01:20:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 01:20:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:20:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:20:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:20:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 01:20:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 01:20:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 01:20:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:20:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:20:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:20:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:20:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:20:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:20:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:20:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:20:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 01:20:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:20:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:20:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:20:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:20:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:20:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:20:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:20:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:20:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:20:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:20:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:20:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:20:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:20:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:20:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:20:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:20:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:20:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:20:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:20:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:20:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:20:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:20:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:20:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:20:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:20:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:20:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:20:43,227 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:20:43,228 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:20:43,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:20:43 BoogieIcfgContainer [2020-08-22 01:20:43,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:20:43,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:20:43,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:20:43,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:20:43,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:20:41" (1/3) ... [2020-08-22 01:20:43,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a2235c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:20:43, skipping insertion in model container [2020-08-22 01:20:43,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:20:41" (2/3) ... [2020-08-22 01:20:43,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a2235c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:20:43, skipping insertion in model container [2020-08-22 01:20:43,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:20:43" (3/3) ... [2020-08-22 01:20:43,243 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2020-08-22 01:20:43,255 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:20:43,264 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:20:43,279 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:20:43,306 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:20:43,306 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:20:43,306 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:20:43,306 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:20:43,307 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:20:43,307 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:20:43,307 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:20:43,307 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:20:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-22 01:20:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 01:20:43,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:43,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:43,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:43,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:43,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1771327782, now seen corresponding path program 1 times [2020-08-22 01:20:43,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:43,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859432002] [2020-08-22 01:20:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,085 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:44,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:20:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:20:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:20:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:44,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859432002] [2020-08-22 01:20:44,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:44,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:20:44,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417515388] [2020-08-22 01:20:44,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:20:44,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:44,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:20:44,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:20:44,227 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-22 01:20:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:45,389 INFO L93 Difference]: Finished difference Result 360 states and 456 transitions. [2020-08-22 01:20:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:20:45,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 01:20:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:45,407 INFO L225 Difference]: With dead ends: 360 [2020-08-22 01:20:45,407 INFO L226 Difference]: Without dead ends: 198 [2020-08-22 01:20:45,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:20:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-22 01:20:45,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-08-22 01:20:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-22 01:20:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2020-08-22 01:20:45,509 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 59 [2020-08-22 01:20:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:45,509 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2020-08-22 01:20:45,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:20:45,510 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2020-08-22 01:20:45,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 01:20:45,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:45,514 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:45,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:20:45,514 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:45,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:45,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1467126020, now seen corresponding path program 1 times [2020-08-22 01:20:45,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:45,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639374317] [2020-08-22 01:20:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,889 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:45,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:20:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:20:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 01:20:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:45,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639374317] [2020-08-22 01:20:45,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:45,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:20:45,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639251627] [2020-08-22 01:20:45,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:20:45,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:45,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:20:45,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:20:45,951 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 5 states. [2020-08-22 01:20:46,353 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:47,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:47,416 INFO L93 Difference]: Finished difference Result 295 states and 356 transitions. [2020-08-22 01:20:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 01:20:47,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 01:20:47,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:47,421 INFO L225 Difference]: With dead ends: 295 [2020-08-22 01:20:47,421 INFO L226 Difference]: Without dead ends: 188 [2020-08-22 01:20:47,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:20:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-22 01:20:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 154. [2020-08-22 01:20:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-22 01:20:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2020-08-22 01:20:47,503 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 60 [2020-08-22 01:20:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:47,503 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2020-08-22 01:20:47,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:20:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2020-08-22 01:20:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 01:20:47,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:47,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:47,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:20:47,514 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:47,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:47,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2049486337, now seen corresponding path program 1 times [2020-08-22 01:20:47,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:47,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280226526] [2020-08-22 01:20:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:47,951 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:47,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:47,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:47,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:20:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:20:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 01:20:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:48,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280226526] [2020-08-22 01:20:48,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:48,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:20:48,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823048379] [2020-08-22 01:20:48,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:20:48,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:48,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:20:48,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:20:48,046 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 9 states. [2020-08-22 01:20:48,382 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:48,673 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:48,964 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:49,201 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:50,098 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:52,214 INFO L93 Difference]: Finished difference Result 515 states and 629 transitions. [2020-08-22 01:20:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 01:20:52,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-22 01:20:52,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:52,220 INFO L225 Difference]: With dead ends: 515 [2020-08-22 01:20:52,220 INFO L226 Difference]: Without dead ends: 389 [2020-08-22 01:20:52,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:20:52,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-22 01:20:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 324. [2020-08-22 01:20:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-08-22 01:20:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 388 transitions. [2020-08-22 01:20:52,299 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 388 transitions. Word has length 65 [2020-08-22 01:20:52,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:52,299 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 388 transitions. [2020-08-22 01:20:52,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:20:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 388 transitions. [2020-08-22 01:20:52,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 01:20:52,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:52,301 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:52,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:20:52,302 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:52,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:52,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1476281748, now seen corresponding path program 1 times [2020-08-22 01:20:52,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:52,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856994830] [2020-08-22 01:20:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,588 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:52,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:20:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:20:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 01:20:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 01:20:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 01:20:52,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856994830] [2020-08-22 01:20:52,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:52,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:20:52,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331211603] [2020-08-22 01:20:52,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:20:52,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:52,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:20:52,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:20:52,757 INFO L87 Difference]: Start difference. First operand 324 states and 388 transitions. Second operand 9 states. [2020-08-22 01:20:53,098 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:53,839 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:54,858 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:55,122 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:55,446 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:20:55,736 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:56,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:20:56,569 INFO L93 Difference]: Finished difference Result 819 states and 1054 transitions. [2020-08-22 01:20:56,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:20:56,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 01:20:56,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:20:56,576 INFO L225 Difference]: With dead ends: 819 [2020-08-22 01:20:56,576 INFO L226 Difference]: Without dead ends: 523 [2020-08-22 01:20:56,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:20:56,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-22 01:20:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 455. [2020-08-22 01:20:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-08-22 01:20:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2020-08-22 01:20:56,669 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 70 [2020-08-22 01:20:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:20:56,669 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2020-08-22 01:20:56,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:20:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2020-08-22 01:20:56,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 01:20:56,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:20:56,672 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:20:56,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:20:56,672 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:20:56,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:20:56,672 INFO L82 PathProgramCache]: Analyzing trace with hash 340334758, now seen corresponding path program 1 times [2020-08-22 01:20:56,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:20:56,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928282186] [2020-08-22 01:20:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:20:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:56,996 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:20:56,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:20:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:20:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:20:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:20:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:20:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:20:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:20:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:20:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:20:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:20:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:20:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 01:20:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 01:20:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:20:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:20:57,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928282186] [2020-08-22 01:20:57,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:20:57,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:20:57,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521922580] [2020-08-22 01:20:57,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:20:57,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:20:57,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:20:57,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:20:57,241 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand 9 states. [2020-08-22 01:20:58,519 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:20:58,754 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:20:59,000 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:20:59,224 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:00,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:00,258 INFO L93 Difference]: Finished difference Result 975 states and 1246 transitions. [2020-08-22 01:21:00,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:21:00,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-22 01:21:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:00,268 INFO L225 Difference]: With dead ends: 975 [2020-08-22 01:21:00,268 INFO L226 Difference]: Without dead ends: 548 [2020-08-22 01:21:00,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:21:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-08-22 01:21:00,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 468. [2020-08-22 01:21:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-22 01:21:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2020-08-22 01:21:00,403 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 108 [2020-08-22 01:21:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:00,404 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2020-08-22 01:21:00,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:21:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2020-08-22 01:21:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 01:21:00,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:00,411 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:00,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:21:00,411 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:00,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2026359836, now seen corresponding path program 1 times [2020-08-22 01:21:00,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:00,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757349990] [2020-08-22 01:21:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,719 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:00,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:21:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:21:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 01:21:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 01:21:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:21:00,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757349990] [2020-08-22 01:21:00,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:00,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 01:21:00,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988864563] [2020-08-22 01:21:00,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:21:00,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:00,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:21:00,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:21:00,912 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 11 states. [2020-08-22 01:21:01,373 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:01,616 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:01,862 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:02,747 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:03,069 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:03,343 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:04,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:04,461 INFO L93 Difference]: Finished difference Result 998 states and 1270 transitions. [2020-08-22 01:21:04,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:21:04,462 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-22 01:21:04,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:04,466 INFO L225 Difference]: With dead ends: 998 [2020-08-22 01:21:04,467 INFO L226 Difference]: Without dead ends: 558 [2020-08-22 01:21:04,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:21:04,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-08-22 01:21:04,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 476. [2020-08-22 01:21:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-08-22 01:21:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 565 transitions. [2020-08-22 01:21:04,575 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 565 transitions. Word has length 108 [2020-08-22 01:21:04,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:04,576 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 565 transitions. [2020-08-22 01:21:04,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:21:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 565 transitions. [2020-08-22 01:21:04,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 01:21:04,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:04,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:04,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:21:04,579 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:04,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2028067331, now seen corresponding path program 1 times [2020-08-22 01:21:04,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:04,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406916719] [2020-08-22 01:21:04,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,872 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:04,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:21:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 01:21:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 01:21:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:04,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 01:21:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:21:05,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406916719] [2020-08-22 01:21:05,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:05,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:21:05,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435937395] [2020-08-22 01:21:05,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:21:05,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:05,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:21:05,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:21:05,022 INFO L87 Difference]: Start difference. First operand 476 states and 565 transitions. Second operand 7 states. [2020-08-22 01:21:05,308 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:05,846 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:07,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:07,978 INFO L93 Difference]: Finished difference Result 1479 states and 1900 transitions. [2020-08-22 01:21:07,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:21:07,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-22 01:21:07,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:07,996 INFO L225 Difference]: With dead ends: 1479 [2020-08-22 01:21:07,996 INFO L226 Difference]: Without dead ends: 1031 [2020-08-22 01:21:08,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:21:08,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-08-22 01:21:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 953. [2020-08-22 01:21:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-22 01:21:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1151 transitions. [2020-08-22 01:21:08,308 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1151 transitions. Word has length 108 [2020-08-22 01:21:08,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:08,309 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1151 transitions. [2020-08-22 01:21:08,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 01:21:08,310 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1151 transitions. [2020-08-22 01:21:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-22 01:21:08,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:08,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:08,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:21:08,319 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:08,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1144962269, now seen corresponding path program 1 times [2020-08-22 01:21:08,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:08,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273678520] [2020-08-22 01:21:08,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,684 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:08,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 01:21:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 01:21:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 01:21:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 01:21:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 01:21:08,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273678520] [2020-08-22 01:21:08,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:21:08,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 01:21:08,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399315778] [2020-08-22 01:21:08,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 01:21:08,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:08,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 01:21:08,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:21:08,906 INFO L87 Difference]: Start difference. First operand 953 states and 1151 transitions. Second operand 12 states. [2020-08-22 01:21:09,329 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:09,991 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:10,699 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:11,139 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:11,403 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:11,709 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:11,991 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:14,049 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:14,356 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:14,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:14,939 INFO L93 Difference]: Finished difference Result 2713 states and 3488 transitions. [2020-08-22 01:21:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 01:21:14,944 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-22 01:21:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:14,957 INFO L225 Difference]: With dead ends: 2713 [2020-08-22 01:21:14,957 INFO L226 Difference]: Without dead ends: 1980 [2020-08-22 01:21:14,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 01:21:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-22 01:21:15,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1674. [2020-08-22 01:21:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2020-08-22 01:21:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2008 transitions. [2020-08-22 01:21:15,340 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2008 transitions. Word has length 112 [2020-08-22 01:21:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:15,342 INFO L479 AbstractCegarLoop]: Abstraction has 1674 states and 2008 transitions. [2020-08-22 01:21:15,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 01:21:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2008 transitions. [2020-08-22 01:21:15,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-22 01:21:15,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:15,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:15,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:21:15,347 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:15,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:15,348 INFO L82 PathProgramCache]: Analyzing trace with hash 164237146, now seen corresponding path program 1 times [2020-08-22 01:21:15,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:15,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985894948] [2020-08-22 01:21:15,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,772 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:15,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:21:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:21:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:21:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:15,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 01:21:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:16,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:16,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 01:21:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 01:21:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:16,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:16,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 01:21:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:16,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 01:21:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 01:21:16,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985894948] [2020-08-22 01:21:16,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:21:16,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:21:16,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099486609] [2020-08-22 01:21:16,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:21:16,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:16,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:21:16,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:21:16,113 INFO L87 Difference]: Start difference. First operand 1674 states and 2008 transitions. Second operand 16 states. [2020-08-22 01:21:16,521 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:16,871 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 01:21:17,120 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 01:21:17,365 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 01:21:18,042 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:18,361 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:18,718 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:21:19,000 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:21:20,427 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:21,146 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:21,463 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:21,773 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:22,350 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:22,731 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:23,102 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:21:23,865 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:24,195 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 01:21:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:25,044 INFO L93 Difference]: Finished difference Result 3619 states and 4470 transitions. [2020-08-22 01:21:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-22 01:21:25,045 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-08-22 01:21:25,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:25,061 INFO L225 Difference]: With dead ends: 3619 [2020-08-22 01:21:25,061 INFO L226 Difference]: Without dead ends: 2153 [2020-08-22 01:21:25,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-22 01:21:25,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-08-22 01:21:25,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1961. [2020-08-22 01:21:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-08-22 01:21:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2310 transitions. [2020-08-22 01:21:25,475 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2310 transitions. Word has length 174 [2020-08-22 01:21:25,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:25,475 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 2310 transitions. [2020-08-22 01:21:25,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 01:21:25,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2310 transitions. [2020-08-22 01:21:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-22 01:21:25,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:25,486 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:21:25,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 01:21:25,486 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:25,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:25,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1190190750, now seen corresponding path program 1 times [2020-08-22 01:21:25,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:25,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763365461] [2020-08-22 01:21:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,826 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:25,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:21:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:21:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:21:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 01:21:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:21:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 01:21:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:21:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 01:21:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 01:21:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 01:21:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-22 01:21:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-22 01:21:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 82 proven. 31 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-08-22 01:21:26,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763365461] [2020-08-22 01:21:26,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:21:26,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 01:21:26,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528211173] [2020-08-22 01:21:26,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 01:21:26,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:26,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 01:21:26,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:21:26,545 INFO L87 Difference]: Start difference. First operand 1961 states and 2310 transitions. Second operand 15 states. [2020-08-22 01:21:27,810 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:28,093 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:28,339 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:21:28,596 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:28,829 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:29,890 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:30,395 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 01:21:30,842 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 01:21:31,332 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:21:34,472 INFO L93 Difference]: Finished difference Result 5471 states and 6670 transitions. [2020-08-22 01:21:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 01:21:34,473 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-08-22 01:21:34,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:21:34,492 INFO L225 Difference]: With dead ends: 5471 [2020-08-22 01:21:34,492 INFO L226 Difference]: Without dead ends: 3307 [2020-08-22 01:21:34,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 01:21:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2020-08-22 01:21:35,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2847. [2020-08-22 01:21:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2847 states. [2020-08-22 01:21:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3387 transitions. [2020-08-22 01:21:35,184 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3387 transitions. Word has length 311 [2020-08-22 01:21:35,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:21:35,184 INFO L479 AbstractCegarLoop]: Abstraction has 2847 states and 3387 transitions. [2020-08-22 01:21:35,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 01:21:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3387 transitions. [2020-08-22 01:21:35,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-22 01:21:35,203 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:21:35,203 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 01:21:35,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 01:21:35,204 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:21:35,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:21:35,204 INFO L82 PathProgramCache]: Analyzing trace with hash -547150695, now seen corresponding path program 1 times [2020-08-22 01:21:35,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:21:35,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091070192] [2020-08-22 01:21:35,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:21:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,506 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:21:35,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:21:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:21:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 01:21:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:21:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 01:21:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 01:21:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:21:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 01:21:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:21:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:21:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-22 01:21:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:21:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 01:21:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 01:21:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:21:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 01:21:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 01:21:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:21:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 01:21:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:21:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:21:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:21:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:21:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-22 01:21:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:35,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-22 01:21:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:21:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-08-22 01:21:36,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091070192] [2020-08-22 01:21:36,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:21:36,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 01:21:36,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315437579] [2020-08-22 01:21:36,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 01:21:36,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:21:36,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 01:21:36,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 01:21:36,117 INFO L87 Difference]: Start difference. First operand 2847 states and 3387 transitions. Second operand 16 states. [2020-08-22 01:21:36,851 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 01:21:37,198 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:37,470 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:37,832 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 01:21:38,565 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:21:39,733 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191