/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:13:47,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:13:47,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:13:47,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:13:47,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:13:47,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:13:47,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:13:47,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:13:47,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:13:47,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:13:47,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:13:47,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:13:47,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:13:47,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:13:47,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:13:47,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:13:47,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:13:47,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:13:47,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:13:47,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:13:47,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:13:47,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:13:47,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:13:47,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:13:47,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:13:47,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:13:47,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:13:47,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:13:47,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:13:47,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:13:47,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:13:47,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:13:47,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:13:47,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:13:47,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:13:47,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:13:47,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:13:47,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:13:47,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:13:47,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:13:47,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:13:47,322 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 [2020-09-21 10:13:47,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:13:47,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:13:47,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:13:47,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:13:47,375 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:13:47,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:13:47,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:13:47,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:13:47,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:13:47,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:13:47,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:13:47,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:13:47,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:13:47,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:13:47,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:13:47,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:13:47,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:13:47,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:13:47,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:13:47,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:13:47,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:13:47,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:13:47,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:13:47,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:13:47,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:13:47,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:13:47,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:13:47,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:13:47,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:13:47,381 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 -> false [2020-09-21 10:13:47,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:13:47,897 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:13:47,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:13:47,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:13:47,905 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:13:47,907 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-09-21 10:13:47,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bb348dd1/590d1d5e305449f98faeb44f3bff047e/FLAGa7a8098e0 [2020-09-21 10:13:48,608 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:13:48,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product39.cil.c [2020-09-21 10:13:48,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bb348dd1/590d1d5e305449f98faeb44f3bff047e/FLAGa7a8098e0 [2020-09-21 10:13:48,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9bb348dd1/590d1d5e305449f98faeb44f3bff047e [2020-09-21 10:13:48,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:13:48,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:13:48,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:13:48,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:13:48,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:13:48,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:13:48" (1/1) ... [2020-09-21 10:13:48,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:48, skipping insertion in model container [2020-09-21 10:13:48,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:13:48" (1/1) ... [2020-09-21 10:13:48,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:13:48,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:13:49,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:13:49,392 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:13:49,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:13:49,615 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:13:49,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:49 WrapperNode [2020-09-21 10:13:49,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:13:49,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:13:49,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:13:49,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:13:49,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:49" (1/1) ... [2020-09-21 10:13:49,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:49" (1/1) ... [2020-09-21 10:13:49,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:49" (1/1) ... [2020-09-21 10:13:49,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:49" (1/1) ... [2020-09-21 10:13:49,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:49" (1/1) ... [2020-09-21 10:13:49,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:49" (1/1) ... [2020-09-21 10:13:49,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:49" (1/1) ... [2020-09-21 10:13:49,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:13:49,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:13:49,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:13:49,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:13:49,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:49" (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 [2020-09-21 10:13:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:13:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:13:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:13:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:13:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:13:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:13:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:13:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:13:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:13:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:13:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:13:49,868 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:13:49,868 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:13:49,868 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:13:49,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:13:49,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:13:49,870 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:13:49,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:13:49,870 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 10:13:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:13:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:13:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:13:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:13:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:13:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:13:49,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-09-21 10:13:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-09-21 10:13:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-09-21 10:13:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:13:49,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:13:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:13:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:13:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:13:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:13:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:13:49,874 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:13:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:13:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:13:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:13:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:13:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:13:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:13:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:13:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:13:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:13:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:13:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 10:13:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-09-21 10:13:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-09-21 10:13:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:13:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:13:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:13:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:13:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:13:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:13:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:13:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:13:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:13:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:13:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:13:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-09-21 10:13:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:13:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:13:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:13:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:13:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:13:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:13:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:13:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:13:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:13:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:13:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:13:51,065 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:13:51,066 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:13:51,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:13:51 BoogieIcfgContainer [2020-09-21 10:13:51,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:13:51,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:13:51,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:13:51,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:13:51,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:13:48" (1/3) ... [2020-09-21 10:13:51,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e0ff9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:13:51, skipping insertion in model container [2020-09-21 10:13:51,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:49" (2/3) ... [2020-09-21 10:13:51,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e0ff9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:13:51, skipping insertion in model container [2020-09-21 10:13:51,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:13:51" (3/3) ... [2020-09-21 10:13:51,082 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product39.cil.c [2020-09-21 10:13:51,094 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:13:51,105 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:13:51,127 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:13:51,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:13:51,155 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:13:51,155 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:13:51,156 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:13:51,156 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:13:51,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:13:51,156 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:13:51,156 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:13:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-09-21 10:13:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-21 10:13:51,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:51,205 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] [2020-09-21 10:13:51,205 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:51,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:51,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1474572721, now seen corresponding path program 1 times [2020-09-21 10:13:51,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:51,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307244623] [2020-09-21 10:13:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:51,993 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:51,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:52,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:52,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:52,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:52,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:52,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:52,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:13:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:52,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:52,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:13:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:52,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:13:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:52,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:52,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307244623] [2020-09-21 10:13:52,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:52,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:13:52,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966131903] [2020-09-21 10:13:52,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:13:52,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:52,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:13:52,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:13:52,163 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2020-09-21 10:13:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:53,306 INFO L93 Difference]: Finished difference Result 314 states and 404 transitions. [2020-09-21 10:13:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:13:53,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-09-21 10:13:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:53,326 INFO L225 Difference]: With dead ends: 314 [2020-09-21 10:13:53,327 INFO L226 Difference]: Without dead ends: 173 [2020-09-21 10:13:53,333 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 [2020-09-21 10:13:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-21 10:13:53,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2020-09-21 10:13:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-21 10:13:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 167 transitions. [2020-09-21 10:13:53,437 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 167 transitions. Word has length 59 [2020-09-21 10:13:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:53,437 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 167 transitions. [2020-09-21 10:13:53,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:13:53,438 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 167 transitions. [2020-09-21 10:13:53,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-21 10:13:53,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:53,442 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] [2020-09-21 10:13:53,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:13:53,443 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:53,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:53,443 INFO L82 PathProgramCache]: Analyzing trace with hash -902835711, now seen corresponding path program 1 times [2020-09-21 10:13:53,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:53,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115657227] [2020-09-21 10:13:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,895 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:53,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:53,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:54,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:54,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:54,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:13:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:54,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:54,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:13:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 10:13:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:54,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115657227] [2020-09-21 10:13:54,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:54,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:13:54,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212105689] [2020-09-21 10:13:54,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:13:54,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:54,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:13:54,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:13:54,073 INFO L87 Difference]: Start difference. First operand 142 states and 167 transitions. Second operand 9 states. [2020-09-21 10:13:54,533 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:13:54,902 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:55,202 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:55,517 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:13:56,577 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:13:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:13:58,533 INFO L93 Difference]: Finished difference Result 481 states and 605 transitions. [2020-09-21 10:13:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:13:58,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-09-21 10:13:58,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:13:58,541 INFO L225 Difference]: With dead ends: 481 [2020-09-21 10:13:58,541 INFO L226 Difference]: Without dead ends: 367 [2020-09-21 10:13:58,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:13:58,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-09-21 10:13:58,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 313. [2020-09-21 10:13:58,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-09-21 10:13:58,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 384 transitions. [2020-09-21 10:13:58,649 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 384 transitions. Word has length 64 [2020-09-21 10:13:58,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:13:58,649 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 384 transitions. [2020-09-21 10:13:58,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:13:58,650 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 384 transitions. [2020-09-21 10:13:58,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-21 10:13:58,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:58,653 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] [2020-09-21 10:13:58,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:13:58,653 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:58,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:58,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2087202736, now seen corresponding path program 1 times [2020-09-21 10:13:58,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:58,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582945973] [2020-09-21 10:13:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,061 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:13:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:13:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 10:13:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:13:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:13:59,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582945973] [2020-09-21 10:13:59,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:59,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:13:59,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474566905] [2020-09-21 10:13:59,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:13:59,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:59,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:13:59,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:13:59,201 INFO L87 Difference]: Start difference. First operand 313 states and 384 transitions. Second operand 9 states. [2020-09-21 10:13:59,629 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:00,333 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:01,478 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:01,916 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:02,416 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:02,716 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:03,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:03,713 INFO L93 Difference]: Finished difference Result 829 states and 1126 transitions. [2020-09-21 10:14:03,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 10:14:03,715 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-21 10:14:03,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:03,722 INFO L225 Difference]: With dead ends: 829 [2020-09-21 10:14:03,723 INFO L226 Difference]: Without dead ends: 544 [2020-09-21 10:14:03,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:14:03,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-09-21 10:14:03,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 454. [2020-09-21 10:14:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-09-21 10:14:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 573 transitions. [2020-09-21 10:14:03,822 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 573 transitions. Word has length 70 [2020-09-21 10:14:03,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:03,823 INFO L479 AbstractCegarLoop]: Abstraction has 454 states and 573 transitions. [2020-09-21 10:14:03,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:14:03,824 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 573 transitions. [2020-09-21 10:14:03,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 10:14:03,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:03,827 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] [2020-09-21 10:14:03,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:14:03,827 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:03,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:03,828 INFO L82 PathProgramCache]: Analyzing trace with hash 571882893, now seen corresponding path program 1 times [2020-09-21 10:14:03,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:03,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241894991] [2020-09-21 10:14:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,159 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:04,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:14:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:14:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-21 10:14:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-21 10:14:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:04,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241894991] [2020-09-21 10:14:04,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:04,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:14:04,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146828278] [2020-09-21 10:14:04,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:14:04,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:04,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:14:04,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:14:04,276 INFO L87 Difference]: Start difference. First operand 454 states and 573 transitions. Second operand 6 states. [2020-09-21 10:14:04,874 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:06,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:06,137 INFO L93 Difference]: Finished difference Result 810 states and 1016 transitions. [2020-09-21 10:14:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:14:06,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-09-21 10:14:06,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:06,143 INFO L225 Difference]: With dead ends: 810 [2020-09-21 10:14:06,143 INFO L226 Difference]: Without dead ends: 485 [2020-09-21 10:14:06,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:14:06,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-09-21 10:14:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 412. [2020-09-21 10:14:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-09-21 10:14:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 497 transitions. [2020-09-21 10:14:06,239 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 497 transitions. Word has length 88 [2020-09-21 10:14:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:06,240 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 497 transitions. [2020-09-21 10:14:06,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:14:06,240 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 497 transitions. [2020-09-21 10:14:06,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-21 10:14:06,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:06,242 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] [2020-09-21 10:14:06,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:14:06,243 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:06,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:06,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1962075473, now seen corresponding path program 1 times [2020-09-21 10:14:06,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:06,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144763480] [2020-09-21 10:14:06,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,578 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:06,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:14:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:14:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-21 10:14:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-21 10:14:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:06,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144763480] [2020-09-21 10:14:06,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:06,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:14:06,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092881864] [2020-09-21 10:14:06,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:14:06,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:06,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:14:06,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:14:06,747 INFO L87 Difference]: Start difference. First operand 412 states and 497 transitions. Second operand 9 states. [2020-09-21 10:14:07,115 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:08,273 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:08,571 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:08,923 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:09,247 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:10,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:10,396 INFO L93 Difference]: Finished difference Result 1234 states and 1655 transitions. [2020-09-21 10:14:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:14:10,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-09-21 10:14:10,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:10,404 INFO L225 Difference]: With dead ends: 1234 [2020-09-21 10:14:10,405 INFO L226 Difference]: Without dead ends: 850 [2020-09-21 10:14:10,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:14:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-09-21 10:14:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 727. [2020-09-21 10:14:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-21 10:14:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 881 transitions. [2020-09-21 10:14:10,580 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 881 transitions. Word has length 92 [2020-09-21 10:14:10,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:10,583 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 881 transitions. [2020-09-21 10:14:10,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:14:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 881 transitions. [2020-09-21 10:14:10,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-21 10:14:10,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:10,594 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] [2020-09-21 10:14:10,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:14:10,595 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:10,595 INFO L82 PathProgramCache]: Analyzing trace with hash 236594576, now seen corresponding path program 1 times [2020-09-21 10:14:10,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:10,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146944693] [2020-09-21 10:14:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:10,906 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:10,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:10,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:10,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:10,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:10,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:10,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:14:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:10,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:10,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:14:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:10,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:11,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:11,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:11,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-21 10:14:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:11,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-21 10:14:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:11,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146944693] [2020-09-21 10:14:11,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:11,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:14:11,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820640384] [2020-09-21 10:14:11,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:14:11,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:11,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:14:11,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:14:11,088 INFO L87 Difference]: Start difference. First operand 727 states and 881 transitions. Second operand 9 states. [2020-09-21 10:14:12,241 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:12,550 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:12,875 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:13,191 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:13,987 INFO L93 Difference]: Finished difference Result 1548 states and 1977 transitions. [2020-09-21 10:14:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:14:13,988 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-09-21 10:14:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:13,994 INFO L225 Difference]: With dead ends: 1548 [2020-09-21 10:14:13,994 INFO L226 Difference]: Without dead ends: 849 [2020-09-21 10:14:13,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:14:13,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-09-21 10:14:14,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 747. [2020-09-21 10:14:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-09-21 10:14:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 901 transitions. [2020-09-21 10:14:14,121 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 901 transitions. Word has length 92 [2020-09-21 10:14:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:14,121 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 901 transitions. [2020-09-21 10:14:14,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:14:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 901 transitions. [2020-09-21 10:14:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-21 10:14:14,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:14,128 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] [2020-09-21 10:14:14,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:14:14,128 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:14,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:14,129 INFO L82 PathProgramCache]: Analyzing trace with hash 938194450, now seen corresponding path program 1 times [2020-09-21 10:14:14,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:14,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014048183] [2020-09-21 10:14:14,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,466 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:14,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:14:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:14:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-21 10:14:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-21 10:14:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:14,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014048183] [2020-09-21 10:14:14,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:14,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 10:14:14,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320038872] [2020-09-21 10:14:14,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:14:14,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:14,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:14:14,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:14:14,674 INFO L87 Difference]: Start difference. First operand 747 states and 901 transitions. Second operand 11 states. [2020-09-21 10:14:15,457 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:15,804 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:16,154 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:17,070 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:17,416 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:17,731 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:18,719 INFO L93 Difference]: Finished difference Result 1410 states and 1790 transitions. [2020-09-21 10:14:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:14:18,719 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-09-21 10:14:18,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:18,724 INFO L225 Difference]: With dead ends: 1410 [2020-09-21 10:14:18,724 INFO L226 Difference]: Without dead ends: 691 [2020-09-21 10:14:18,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:14:18,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-09-21 10:14:18,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 618. [2020-09-21 10:14:18,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-09-21 10:14:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 727 transitions. [2020-09-21 10:14:18,847 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 727 transitions. Word has length 92 [2020-09-21 10:14:18,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:18,847 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 727 transitions. [2020-09-21 10:14:18,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:14:18,848 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 727 transitions. [2020-09-21 10:14:18,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-21 10:14:18,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:18,853 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] [2020-09-21 10:14:18,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:14:18,854 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:18,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:18,854 INFO L82 PathProgramCache]: Analyzing trace with hash -711915603, now seen corresponding path program 1 times [2020-09-21 10:14:18,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:18,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502659885] [2020-09-21 10:14:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,385 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:19,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:14:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:14:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 10:14:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 10:14:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-21 10:14:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:19,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502659885] [2020-09-21 10:14:19,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:19,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:14:19,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597467317] [2020-09-21 10:14:19,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:14:19,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:19,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:14:19,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:14:19,596 INFO L87 Difference]: Start difference. First operand 618 states and 727 transitions. Second operand 12 states. [2020-09-21 10:14:20,039 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:20,743 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:21,576 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:21,973 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:22,283 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:22,638 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:22,969 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:24,958 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:25,335 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:25,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:25,847 INFO L93 Difference]: Finished difference Result 1813 states and 2317 transitions. [2020-09-21 10:14:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-21 10:14:25,847 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-09-21 10:14:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:25,856 INFO L225 Difference]: With dead ends: 1813 [2020-09-21 10:14:25,856 INFO L226 Difference]: Without dead ends: 1405 [2020-09-21 10:14:25,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-09-21 10:14:25,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-09-21 10:14:26,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1271. [2020-09-21 10:14:26,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-09-21 10:14:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1497 transitions. [2020-09-21 10:14:26,121 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1497 transitions. Word has length 96 [2020-09-21 10:14:26,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:26,123 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1497 transitions. [2020-09-21 10:14:26,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:14:26,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1497 transitions. [2020-09-21 10:14:26,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-21 10:14:26,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:26,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:26,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:14:26,131 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:26,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:26,131 INFO L82 PathProgramCache]: Analyzing trace with hash 69794205, now seen corresponding path program 1 times [2020-09-21 10:14:26,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:26,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444469796] [2020-09-21 10:14:26,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,513 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:26,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:14:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:14:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:14:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:14:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-21 10:14:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-21 10:14:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-21 10:14:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 10:14:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-21 10:14:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-21 10:14:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:26,855 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 10:14:26,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444469796] [2020-09-21 10:14:26,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:14:26,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 10:14:26,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738304042] [2020-09-21 10:14:26,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 10:14:26,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:26,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 10:14:26,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:14:26,858 INFO L87 Difference]: Start difference. First operand 1271 states and 1497 transitions. Second operand 16 states. [2020-09-21 10:14:27,440 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:27,884 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:28,255 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:28,585 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:29,322 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:29,720 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:30,182 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:30,525 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:31,770 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:32,498 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:32,856 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:33,281 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:33,945 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:34,434 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:34,898 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:35,735 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:36,104 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:37,051 INFO L93 Difference]: Finished difference Result 2793 states and 3416 transitions. [2020-09-21 10:14:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-21 10:14:37,052 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-09-21 10:14:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:37,062 INFO L225 Difference]: With dead ends: 2793 [2020-09-21 10:14:37,062 INFO L226 Difference]: Without dead ends: 1726 [2020-09-21 10:14:37,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=605, Invalid=2257, Unknown=0, NotChecked=0, Total=2862 [2020-09-21 10:14:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2020-09-21 10:14:37,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1529. [2020-09-21 10:14:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1529 states. [2020-09-21 10:14:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1785 transitions. [2020-09-21 10:14:37,313 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1785 transitions. Word has length 155 [2020-09-21 10:14:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:37,313 INFO L479 AbstractCegarLoop]: Abstraction has 1529 states and 1785 transitions. [2020-09-21 10:14:37,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 10:14:37,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1785 transitions. [2020-09-21 10:14:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-21 10:14:37,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:37,321 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-21 10:14:37,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:14:37,322 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:37,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1402201584, now seen corresponding path program 1 times [2020-09-21 10:14:37,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:37,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573737487] [2020-09-21 10:14:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,703 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:37,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:14:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:14:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:14:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:14:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-21 10:14:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 10:14:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 10:14:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:37,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:14:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-21 10:14:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 10:14:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-21 10:14:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:14:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-21 10:14:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-09-21 10:14:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-09-21 10:14:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-09-21 10:14:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-21 10:14:38,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573737487] [2020-09-21 10:14:38,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:14:38,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-21 10:14:38,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32702538] [2020-09-21 10:14:38,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 10:14:38,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:38,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 10:14:38,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:14:38,175 INFO L87 Difference]: Start difference. First operand 1529 states and 1785 transitions. Second operand 15 states. [2020-09-21 10:14:39,450 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:39,762 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:40,107 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:40,438 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:40,760 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:41,846 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:42,562 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-09-21 10:14:43,175 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-09-21 10:14:43,636 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:46,336 INFO L93 Difference]: Finished difference Result 4301 states and 5229 transitions. [2020-09-21 10:14:46,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-21 10:14:46,341 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 269 [2020-09-21 10:14:46,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:46,358 INFO L225 Difference]: With dead ends: 4301 [2020-09-21 10:14:46,358 INFO L226 Difference]: Without dead ends: 2605 [2020-09-21 10:14:46,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-09-21 10:14:46,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states.