/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_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:44:15,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:44:15,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:44:15,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:44:15,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:44:15,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:44:15,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:44:15,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:44:15,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:44:15,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:44:15,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:44:15,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:44:15,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:44:15,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:44:15,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:44:15,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:44:15,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:44:15,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:44:15,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:44:15,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:44:15,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:44:15,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:44:15,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:44:15,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:44:15,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:44:15,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:44:15,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:44:15,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:44:15,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:44:15,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:44:15,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:44:15,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:44:15,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:44:15,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:44:15,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:44:15,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:44:15,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:44:15,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:44:15,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:44:15,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:44:15,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:44:15,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 21:44:15,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:44:15,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:44:15,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:44:15,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:44:15,726 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:44:15,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:44:15,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:44:15,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:44:15,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:44:15,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:44:15,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:44:15,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:44:15,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:44:15,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:44:15,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:44:15,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:44:15,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:44:15,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:44:15,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:44:15,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:44:15,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:44:15,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:44:15,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:44:15,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:44:15,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:44:15,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:44:15,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:44:15,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:44:15,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:44:15,732 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 [2020-08-27 21:44:16,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:44:16,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:44:16,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:44:16,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:44:16,227 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:44:16,229 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product34.cil.c [2020-08-27 21:44:16,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b2d6397/2281ff324f104eb2af267d0edba3c8ba/FLAG615f04836 [2020-08-27 21:44:16,950 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:44:16,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product34.cil.c [2020-08-27 21:44:16,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b2d6397/2281ff324f104eb2af267d0edba3c8ba/FLAG615f04836 [2020-08-27 21:44:17,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17b2d6397/2281ff324f104eb2af267d0edba3c8ba [2020-08-27 21:44:17,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:44:17,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:44:17,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:44:17,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:44:17,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:44:17,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:44:17" (1/1) ... [2020-08-27 21:44:17,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157daaf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:17, skipping insertion in model container [2020-08-27 21:44:17,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:44:17" (1/1) ... [2020-08-27 21:44:17,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:44:17,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:44:17,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:44:17,782 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:44:17,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:44:17,938 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:44:17,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:17 WrapperNode [2020-08-27 21:44:17,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:44:17,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:44:17,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:44:17,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:44:17,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:17" (1/1) ... [2020-08-27 21:44:17,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:17" (1/1) ... [2020-08-27 21:44:17,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:17" (1/1) ... [2020-08-27 21:44:17,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:17" (1/1) ... [2020-08-27 21:44:18,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:17" (1/1) ... [2020-08-27 21:44:18,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:17" (1/1) ... [2020-08-27 21:44:18,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:17" (1/1) ... [2020-08-27 21:44:18,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:44:18,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:44:18,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:44:18,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:44:18,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:44:18,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:44:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:44:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:44:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:44:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:44:18,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:44:18,173 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:44:18,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:44:18,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:44:18,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:44:18,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:44:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:44:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:44:18,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:44:18,176 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:44:18,177 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:44:18,177 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:44:18,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:44:18,177 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:44:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:44:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:44:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:44:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:44:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:44:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:44:18,179 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:44:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:44:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:44:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:44:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:44:18,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:44:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-27 21:44:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-27 21:44:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-27 21:44:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-27 21:44:18,181 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:44:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:44:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:44:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:44:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:44:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:44:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:44:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:44:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:44:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:44:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:44:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:44:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:44:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:44:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:44:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:44:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:44:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:44:18,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:44:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:44:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:44:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:44:18,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:44:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:44:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:44:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:44:18,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:44:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:44:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:44:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:44:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:44:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:44:18,187 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:44:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:44:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:44:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:44:18,188 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:44:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-27 21:44:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:44:18,189 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:44:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:44:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:44:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:44:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:44:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:44:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-27 21:44:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-27 21:44:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:44:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:44:18,192 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:44:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:44:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-27 21:44:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:44:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:44:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:44:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:44:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:44:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:44:18,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:44:19,312 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:44:19,312 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:44:19,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:44:19 BoogieIcfgContainer [2020-08-27 21:44:19,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:44:19,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:44:19,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:44:19,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:44:19,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:44:17" (1/3) ... [2020-08-27 21:44:19,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4db3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:44:19, skipping insertion in model container [2020-08-27 21:44:19,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:44:17" (2/3) ... [2020-08-27 21:44:19,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4db3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:44:19, skipping insertion in model container [2020-08-27 21:44:19,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:44:19" (3/3) ... [2020-08-27 21:44:19,334 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product34.cil.c [2020-08-27 21:44:19,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:44:19,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:44:19,379 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:44:19,406 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:44:19,406 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:44:19,406 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:44:19,406 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:44:19,406 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:44:19,406 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:44:19,406 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:44:19,407 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:44:19,434 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-08-27 21:44:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-27 21:44:19,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:19,448 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:44:19,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:19,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:19,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1468621358, now seen corresponding path program 1 times [2020-08-27 21:44:19,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:19,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296017963] [2020-08-27 21:44:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:20,234 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:20,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:20,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:20,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:20,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:20,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:20,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:20,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:44:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:20,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:44:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:20,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:44:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:20,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296017963] [2020-08-27 21:44:20,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:20,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:44:20,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10451286] [2020-08-27 21:44:20,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:44:20,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:20,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:44:20,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:44:20,411 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-08-27 21:44:21,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:21,436 INFO L93 Difference]: Finished difference Result 265 states and 344 transitions. [2020-08-27 21:44:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:44:21,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-27 21:44:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:21,459 INFO L225 Difference]: With dead ends: 265 [2020-08-27 21:44:21,459 INFO L226 Difference]: Without dead ends: 147 [2020-08-27 21:44:21,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:44:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-27 21:44:21,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2020-08-27 21:44:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-27 21:44:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-08-27 21:44:21,563 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 59 [2020-08-27 21:44:21,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:21,563 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-08-27 21:44:21,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:44:21,564 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-08-27 21:44:21,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-27 21:44:21,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:21,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:44:21,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:44:21,574 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:21,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:21,574 INFO L82 PathProgramCache]: Analyzing trace with hash 732022184, now seen corresponding path program 1 times [2020-08-27 21:44:21,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:21,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133852872] [2020-08-27 21:44:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:21,976 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:22,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:22,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:22,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:22,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:22,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:44:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:22,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:22,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:44:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:22,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-27 21:44:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:22,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133852872] [2020-08-27 21:44:22,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:22,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 21:44:22,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865035911] [2020-08-27 21:44:22,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 21:44:22,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:22,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 21:44:22,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:44:22,081 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 5 states. [2020-08-27 21:44:22,578 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:23,312 INFO L93 Difference]: Finished difference Result 206 states and 252 transitions. [2020-08-27 21:44:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-27 21:44:23,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-27 21:44:23,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:23,317 INFO L225 Difference]: With dead ends: 206 [2020-08-27 21:44:23,317 INFO L226 Difference]: Without dead ends: 137 [2020-08-27 21:44:23,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:44:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-27 21:44:23,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 110. [2020-08-27 21:44:23,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-27 21:44:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-08-27 21:44:23,352 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 60 [2020-08-27 21:44:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:23,353 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-08-27 21:44:23,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 21:44:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-08-27 21:44:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-27 21:44:23,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:23,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:44:23,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:44:23,356 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:23,356 INFO L82 PathProgramCache]: Analyzing trace with hash -69452161, now seen corresponding path program 1 times [2020-08-27 21:44:23,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:23,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407719606] [2020-08-27 21:44:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:23,811 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:23,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:23,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:23,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:23,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:23,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:44:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:23,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:23,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-27 21:44:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:23,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-27 21:44:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:23,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407719606] [2020-08-27 21:44:23,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:23,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:44:23,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242527128] [2020-08-27 21:44:23,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:44:23,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:23,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:44:23,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:44:23,991 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 9 states. [2020-08-27 21:44:24,447 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:24,818 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:25,153 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:25,462 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:26,561 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2020-08-27 21:44:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:44:26,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-27 21:44:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:26,571 INFO L225 Difference]: With dead ends: 219 [2020-08-27 21:44:26,571 INFO L226 Difference]: Without dead ends: 137 [2020-08-27 21:44:26,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:44:26,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-27 21:44:26,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 110. [2020-08-27 21:44:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-27 21:44:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2020-08-27 21:44:26,605 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 65 [2020-08-27 21:44:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:26,607 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2020-08-27 21:44:26,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:44:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2020-08-27 21:44:26,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-27 21:44:26,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:26,614 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] [2020-08-27 21:44:26,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:44:26,615 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:26,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:26,615 INFO L82 PathProgramCache]: Analyzing trace with hash -752044170, now seen corresponding path program 1 times [2020-08-27 21:44:26,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:26,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338425334] [2020-08-27 21:44:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,062 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:27,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:44:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:44:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-27 21:44:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-27 21:44:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:27,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338425334] [2020-08-27 21:44:27,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:27,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:44:27,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145415180] [2020-08-27 21:44:27,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:44:27,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:27,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:44:27,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:44:27,190 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand 7 states. [2020-08-27 21:44:27,629 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:29,165 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:29,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:29,546 INFO L93 Difference]: Finished difference Result 314 states and 394 transitions. [2020-08-27 21:44:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-27 21:44:29,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2020-08-27 21:44:29,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:29,551 INFO L225 Difference]: With dead ends: 314 [2020-08-27 21:44:29,551 INFO L226 Difference]: Without dead ends: 232 [2020-08-27 21:44:29,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:44:29,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-08-27 21:44:29,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 186. [2020-08-27 21:44:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-27 21:44:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 215 transitions. [2020-08-27 21:44:29,598 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 215 transitions. Word has length 73 [2020-08-27 21:44:29,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:29,598 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 215 transitions. [2020-08-27 21:44:29,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:44:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 215 transitions. [2020-08-27 21:44:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-27 21:44:29,600 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:29,600 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] [2020-08-27 21:44:29,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:44:29,600 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:29,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:29,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1770960597, now seen corresponding path program 1 times [2020-08-27 21:44:29,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:29,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231469605] [2020-08-27 21:44:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:29,991 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:29,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:44:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:44:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:44:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:44:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-27 21:44:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-27 21:44:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-27 21:44:30,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231469605] [2020-08-27 21:44:30,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:30,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:44:30,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108766946] [2020-08-27 21:44:30,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:44:30,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:30,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:44:30,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:44:30,142 INFO L87 Difference]: Start difference. First operand 186 states and 215 transitions. Second operand 9 states. [2020-08-27 21:44:30,606 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:31,412 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:32,105 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:32,497 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:33,064 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:33,371 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:33,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:33,821 INFO L93 Difference]: Finished difference Result 389 states and 479 transitions. [2020-08-27 21:44:33,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:44:33,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-27 21:44:33,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:33,827 INFO L225 Difference]: With dead ends: 389 [2020-08-27 21:44:33,827 INFO L226 Difference]: Without dead ends: 231 [2020-08-27 21:44:33,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:44:33,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-08-27 21:44:33,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 185. [2020-08-27 21:44:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-27 21:44:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 212 transitions. [2020-08-27 21:44:33,878 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 212 transitions. Word has length 87 [2020-08-27 21:44:33,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:33,879 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 212 transitions. [2020-08-27 21:44:33,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:44:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 212 transitions. [2020-08-27 21:44:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-27 21:44:33,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:33,880 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] [2020-08-27 21:44:33,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:44:33,881 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:33,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:33,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1107726217, now seen corresponding path program 1 times [2020-08-27 21:44:33,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:33,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577926207] [2020-08-27 21:44:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,235 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:34,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:44:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:44:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:44:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:44:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-27 21:44:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-27 21:44:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:34,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577926207] [2020-08-27 21:44:34,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:34,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:44:34,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159487028] [2020-08-27 21:44:34,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:44:34,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:34,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:44:34,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:44:34,409 INFO L87 Difference]: Start difference. First operand 185 states and 212 transitions. Second operand 9 states. [2020-08-27 21:44:35,538 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:35,872 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:44:36,221 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:36,544 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:37,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:37,186 INFO L93 Difference]: Finished difference Result 387 states and 475 transitions. [2020-08-27 21:44:37,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:44:37,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-27 21:44:37,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:37,190 INFO L225 Difference]: With dead ends: 387 [2020-08-27 21:44:37,190 INFO L226 Difference]: Without dead ends: 230 [2020-08-27 21:44:37,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:44:37,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-08-27 21:44:37,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 190. [2020-08-27 21:44:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-27 21:44:37,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2020-08-27 21:44:37,231 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 88 [2020-08-27 21:44:37,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:37,232 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2020-08-27 21:44:37,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:44:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2020-08-27 21:44:37,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-27 21:44:37,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:37,233 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] [2020-08-27 21:44:37,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:44:37,234 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:37,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:37,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1801037685, now seen corresponding path program 1 times [2020-08-27 21:44:37,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:37,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122869243] [2020-08-27 21:44:37,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,554 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:37,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:44:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:44:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:44:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:44:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-27 21:44:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-27 21:44:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:37,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122869243] [2020-08-27 21:44:37,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:37,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-27 21:44:37,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165158788] [2020-08-27 21:44:37,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:44:37,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:37,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:44:37,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:44:37,717 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand 11 states. [2020-08-27 21:44:38,565 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:38,906 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:39,214 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:40,093 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:40,434 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:40,758 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:41,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:41,471 INFO L93 Difference]: Finished difference Result 399 states and 494 transitions. [2020-08-27 21:44:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:44:41,472 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-27 21:44:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:41,475 INFO L225 Difference]: With dead ends: 399 [2020-08-27 21:44:41,475 INFO L226 Difference]: Without dead ends: 237 [2020-08-27 21:44:41,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:44:41,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-27 21:44:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 194. [2020-08-27 21:44:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-08-27 21:44:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 221 transitions. [2020-08-27 21:44:41,532 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 221 transitions. Word has length 88 [2020-08-27 21:44:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:41,534 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 221 transitions. [2020-08-27 21:44:41,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:44:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 221 transitions. [2020-08-27 21:44:41,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-27 21:44:41,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:41,536 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] [2020-08-27 21:44:41,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:44:41,536 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:41,537 INFO L82 PathProgramCache]: Analyzing trace with hash 310252684, now seen corresponding path program 1 times [2020-08-27 21:44:41,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:41,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841933784] [2020-08-27 21:44:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:41,942 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:41,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:44:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:44:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:44:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:44:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-27 21:44:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-27 21:44:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:42,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841933784] [2020-08-27 21:44:42,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:42,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:44:42,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913563924] [2020-08-27 21:44:42,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:44:42,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:42,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:44:42,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:44:42,146 INFO L87 Difference]: Start difference. First operand 194 states and 221 transitions. Second operand 7 states. [2020-08-27 21:44:42,674 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:43,424 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:44,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:44,995 INFO L93 Difference]: Finished difference Result 571 states and 717 transitions. [2020-08-27 21:44:44,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-27 21:44:44,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-08-27 21:44:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:45,000 INFO L225 Difference]: With dead ends: 571 [2020-08-27 21:44:45,000 INFO L226 Difference]: Without dead ends: 405 [2020-08-27 21:44:45,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:44:45,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-08-27 21:44:45,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 363. [2020-08-27 21:44:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-27 21:44:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 424 transitions. [2020-08-27 21:44:45,070 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 424 transitions. Word has length 88 [2020-08-27 21:44:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:45,071 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 424 transitions. [2020-08-27 21:44:45,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:44:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 424 transitions. [2020-08-27 21:44:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-27 21:44:45,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:45,073 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] [2020-08-27 21:44:45,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:44:45,073 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:45,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1394429222, now seen corresponding path program 1 times [2020-08-27 21:44:45,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:45,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569831970] [2020-08-27 21:44:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,511 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:45,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:44:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-27 21:44:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-27 21:44:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:44:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:44:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-27 21:44:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-27 21:44:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:44:45,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569831970] [2020-08-27 21:44:45,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:44:45,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:44:45,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081120069] [2020-08-27 21:44:45,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:44:45,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:45,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:44:45,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:44:45,696 INFO L87 Difference]: Start difference. First operand 363 states and 424 transitions. Second operand 12 states. [2020-08-27 21:44:46,177 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:46,903 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:47,968 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:48,381 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:48,678 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:44:49,025 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:49,345 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:44:50,171 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:50,501 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:44:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:44:51,131 INFO L93 Difference]: Finished difference Result 1001 states and 1242 transitions. [2020-08-27 21:44:51,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-27 21:44:51,133 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-08-27 21:44:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:44:51,138 INFO L225 Difference]: With dead ends: 1001 [2020-08-27 21:44:51,138 INFO L226 Difference]: Without dead ends: 735 [2020-08-27 21:44:51,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2020-08-27 21:44:51,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-08-27 21:44:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 616. [2020-08-27 21:44:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-08-27 21:44:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 712 transitions. [2020-08-27 21:44:51,249 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 712 transitions. Word has length 92 [2020-08-27 21:44:51,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:44:51,250 INFO L479 AbstractCegarLoop]: Abstraction has 616 states and 712 transitions. [2020-08-27 21:44:51,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:44:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 712 transitions. [2020-08-27 21:44:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-27 21:44:51,252 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:44:51,253 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:44:51,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:44:51,253 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:44:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:44:51,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1563029790, now seen corresponding path program 1 times [2020-08-27 21:44:51,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:44:51,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061050587] [2020-08-27 21:44:51,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:44:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,621 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:44:51,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:44:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:44:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:44:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:44:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:44:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:44:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:44:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-27 21:44:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:44:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:44:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:44:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:44:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-27 21:44:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:44:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-27 21:44:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-27 21:44:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:44:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-27 21:44:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:51,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-27 21:44:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:44:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-27 21:44:52,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061050587] [2020-08-27 21:44:52,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:44:52,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-27 21:44:52,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825595532] [2020-08-27 21:44:52,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 21:44:52,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:44:52,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 21:44:52,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:44:52,008 INFO L87 Difference]: Start difference. First operand 616 states and 712 transitions. Second operand 16 states. [2020-08-27 21:44:52,683 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:44:53,113 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-27 21:44:53,476 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:44:53,789 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:44:54,608 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-27 21:44:54,958 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:44:55,488 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-27 21:44:56,232 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:44:56,679 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-27 21:44:58,082 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-27 21:44:58,425 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-27 21:44:59,051 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-27 21:44:59,452 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:45:00,342 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-27 21:45:01,328 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-27 21:45:01,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:45:01,628 INFO L93 Difference]: Finished difference Result 973 states and 1146 transitions. [2020-08-27 21:45:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-27 21:45:01,629 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 136 [2020-08-27 21:45:01,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:45:01,630 INFO L225 Difference]: With dead ends: 973 [2020-08-27 21:45:01,630 INFO L226 Difference]: Without dead ends: 0 [2020-08-27 21:45:01,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=463, Invalid=1699, Unknown=0, NotChecked=0, Total=2162 [2020-08-27 21:45:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-27 21:45:01,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-27 21:45:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-27 21:45:01,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-27 21:45:01,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2020-08-27 21:45:01,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:45:01,634 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-27 21:45:01,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-27 21:45:01,635 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-27 21:45:01,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-27 21:45:01,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:45:01,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-27 21:45:01,841 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:45:02,013 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:45:02,187 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-08-27 21:45:02,359 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:45:02,722 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2020-08-27 21:45:03,124 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2020-08-27 21:45:03,298 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-08-27 21:45:03,469 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:45:05,529 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 256 DAG size of output: 233 [2020-08-27 21:45:05,697 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:45:05,865 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-08-27 21:45:06,041 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:45:06,213 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 194 [2020-08-27 21:45:06,378 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-08-27 21:45:06,719 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2020-08-27 21:45:06,886 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-08-27 21:45:07,159 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:45:07,392 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:45:07,557 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:45:07,731 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 194 [2020-08-27 21:45:07,894 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:45:08,064 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:45:08,227 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:45:08,400 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-27 21:45:08,562 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-08-27 21:45:08,888 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-08-27 21:45:09,223 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-08-27 21:45:09,380 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:45:09,538 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:45:09,878 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194 [2020-08-27 21:45:10,196 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-08-27 21:45:10,359 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:45:10,521 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-08-27 21:45:10,679 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:45:10,842 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:45:11,014 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 195 [2020-08-27 21:45:11,207 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 202 [2020-08-27 21:45:11,407 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 204 [2020-08-27 21:45:11,561 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:45:11,732 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 195 [2020-08-27 21:45:13,557 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 259 DAG size of output: 237 [2020-08-27 21:45:13,720 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-27 21:45:13,882 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:45:14,204 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-08-27 21:45:14,542 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-08-27 21:45:14,701 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:45:15,038 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 194