/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:09:04,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:09:04,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:09:04,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:09:04,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:09:04,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:09:04,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:09:04,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:09:04,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:09:04,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:09:04,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:09:04,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:09:04,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:09:04,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:09:04,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:09:04,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:09:04,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:09:04,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:09:04,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:09:04,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:09:04,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:09:04,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:09:04,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:09:04,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:09:04,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:09:04,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:09:04,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:09:05,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:09:05,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:09:05,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:09:05,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:09:05,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:09:05,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:09:05,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:09:05,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:09:05,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:09:05,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:09:05,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:09:05,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:09:05,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:09:05,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:09:05,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:09:05,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:09:05,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:09:05,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:09:05,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:09:05,066 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:09:05,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:09:05,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:09:05,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:09:05,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:09:05,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:09:05,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:09:05,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:09:05,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:09:05,071 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:09:05,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:09:05,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:09:05,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:09:05,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:09:05,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:09:05,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:09:05,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:09:05,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:09:05,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:09:05,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:09:05,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:09:05,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:09:05,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:09:05,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:09:05,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:09:05,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 16:09:05,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:09:05,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:09:05,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:09:05,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:09:05,438 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:09:05,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-18 16:09:05,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563dd2e92/ca876d67b15e4ce8a17a26c4e310664e/FLAG5ae245706 [2020-08-18 16:09:06,081 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:09:06,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-08-18 16:09:06,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563dd2e92/ca876d67b15e4ce8a17a26c4e310664e/FLAG5ae245706 [2020-08-18 16:09:06,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563dd2e92/ca876d67b15e4ce8a17a26c4e310664e [2020-08-18 16:09:06,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:09:06,405 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:09:06,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:09:06,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:09:06,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:09:06,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:09:06" (1/1) ... [2020-08-18 16:09:06,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63832a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:09:06, skipping insertion in model container [2020-08-18 16:09:06,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:09:06" (1/1) ... [2020-08-18 16:09:06,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:09:06,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:09:06,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:09:06,878 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:09:06,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:09:07,018 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:09:07,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:09:07 WrapperNode [2020-08-18 16:09:07,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:09:07,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:09:07,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:09:07,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:09:07,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:09:07" (1/1) ... [2020-08-18 16:09:07,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:09:07" (1/1) ... [2020-08-18 16:09:07,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:09:07" (1/1) ... [2020-08-18 16:09:07,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:09:07" (1/1) ... [2020-08-18 16:09:07,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:09:07" (1/1) ... [2020-08-18 16:09:07,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:09:07" (1/1) ... [2020-08-18 16:09:07,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:09:07" (1/1) ... [2020-08-18 16:09:07,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:09:07,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:09:07,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:09:07,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:09:07,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:09:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:09:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:09:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:09:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:09:07,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 16:09:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:09:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:09:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:09:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:09:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:09:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:09:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:09:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:09:07,178 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:09:07,178 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:09:07,178 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:09:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:09:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:09:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:09:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:09:07,179 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:09:07,180 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:09:07,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:09:07,180 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:09:07,180 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:09:07,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:09:07,181 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:09:07,181 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 16:09:07,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:09:07,182 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:09:07,182 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:09:07,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:09:07,182 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:09:07,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:09:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:09:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:09:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:09:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:09:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:09:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:09:07,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:09:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:09:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:09:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:09:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:09:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:09:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 16:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:09:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:09:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:09:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:09:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:09:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:09:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:09:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:09:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:09:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:09:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:09:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:09:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:09:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:09:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:09:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:09:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:09:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:09:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:09:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:09:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 16:09:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:09:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:09:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:09:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:09:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:09:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:09:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:09:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:09:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:09:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:09:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:09:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:09:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:09:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:09:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 16:09:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:09:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:09:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:09:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:09:07,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:09:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:09:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:09:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:09:08,185 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:09:08,185 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:09:08,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:09:08 BoogieIcfgContainer [2020-08-18 16:09:08,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:09:08,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:09:08,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:09:08,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:09:08,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:09:06" (1/3) ... [2020-08-18 16:09:08,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fb8eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:09:08, skipping insertion in model container [2020-08-18 16:09:08,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:09:07" (2/3) ... [2020-08-18 16:09:08,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fb8eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:09:08, skipping insertion in model container [2020-08-18 16:09:08,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:09:08" (3/3) ... [2020-08-18 16:09:08,200 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-08-18 16:09:08,211 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:09:08,218 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:09:08,232 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:09:08,257 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:09:08,257 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:09:08,257 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:09:08,257 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:09:08,258 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:09:08,258 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:09:08,258 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:09:08,258 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:09:08,281 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-18 16:09:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 16:09:08,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:08,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:08,292 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:08,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:08,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1915366745, now seen corresponding path program 1 times [2020-08-18 16:09:08,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:08,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864323674] [2020-08-18 16:09:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:08,939 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:08,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:08,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:09:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:09,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:09:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:09:09,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864323674] [2020-08-18 16:09:09,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:09:09,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:09:09,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934519390] [2020-08-18 16:09:09,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:09:09,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:09,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:09:09,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:09:09,065 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-18 16:09:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:10,195 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2020-08-18 16:09:10,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:09:10,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 16:09:10,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:10,213 INFO L225 Difference]: With dead ends: 310 [2020-08-18 16:09:10,213 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 16:09:10,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:09:10,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 16:09:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-18 16:09:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 16:09:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-18 16:09:10,375 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 46 [2020-08-18 16:09:10,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:10,375 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-18 16:09:10,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:09:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-18 16:09:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 16:09:10,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:10,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:10,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:09:10,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:10,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:10,381 INFO L82 PathProgramCache]: Analyzing trace with hash -868486899, now seen corresponding path program 1 times [2020-08-18 16:09:10,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:10,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84381597] [2020-08-18 16:09:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:10,694 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:10,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:10,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:10,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:10,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:09:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:09:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:09:10,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84381597] [2020-08-18 16:09:10,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:09:10,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:09:10,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035915537] [2020-08-18 16:09:10,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:09:10,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:10,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:09:10,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:09:10,744 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 4 states. [2020-08-18 16:09:11,192 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:12,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:12,041 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2020-08-18 16:09:12,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:09:12,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 16:09:12,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:12,045 INFO L225 Difference]: With dead ends: 230 [2020-08-18 16:09:12,045 INFO L226 Difference]: Without dead ends: 152 [2020-08-18 16:09:12,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:09:12,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-18 16:09:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-18 16:09:12,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 16:09:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 141 transitions. [2020-08-18 16:09:12,084 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 141 transitions. Word has length 47 [2020-08-18 16:09:12,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:12,085 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 141 transitions. [2020-08-18 16:09:12,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:09:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 141 transitions. [2020-08-18 16:09:12,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:09:12,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:12,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:12,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:09:12,088 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:12,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:12,088 INFO L82 PathProgramCache]: Analyzing trace with hash -905097918, now seen corresponding path program 1 times [2020-08-18 16:09:12,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:12,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200670563] [2020-08-18 16:09:12,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,377 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:12,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:09:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:09:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:09:12,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200670563] [2020-08-18 16:09:12,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:09:12,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:09:12,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042363860] [2020-08-18 16:09:12,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:09:12,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:12,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:09:12,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:09:12,472 INFO L87 Difference]: Start difference. First operand 124 states and 141 transitions. Second operand 8 states. [2020-08-18 16:09:12,892 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:13,217 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:13,475 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:13,734 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:14,505 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:16,244 INFO L93 Difference]: Finished difference Result 427 states and 518 transitions. [2020-08-18 16:09:16,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:09:16,245 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 16:09:16,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:16,253 INFO L225 Difference]: With dead ends: 427 [2020-08-18 16:09:16,253 INFO L226 Difference]: Without dead ends: 327 [2020-08-18 16:09:16,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:09:16,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-18 16:09:16,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-08-18 16:09:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-08-18 16:09:16,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 294 transitions. [2020-08-18 16:09:16,341 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 294 transitions. Word has length 52 [2020-08-18 16:09:16,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:16,341 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 294 transitions. [2020-08-18 16:09:16,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:09:16,342 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 294 transitions. [2020-08-18 16:09:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 16:09:16,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:16,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:16,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:09:16,345 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:16,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:16,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1583600214, now seen corresponding path program 1 times [2020-08-18 16:09:16,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:16,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379680147] [2020-08-18 16:09:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,655 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:16,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:09:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:09:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:09:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:09:16,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379680147] [2020-08-18 16:09:16,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:09:16,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:09:16,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300696450] [2020-08-18 16:09:16,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:09:16,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:16,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:09:16,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:09:16,777 INFO L87 Difference]: Start difference. First operand 250 states and 294 transitions. Second operand 12 states. [2020-08-18 16:09:17,223 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:17,542 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:17,799 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:18,054 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:18,673 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:19,391 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:19,766 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:20,027 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:20,321 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:20,573 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:20,978 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:21,240 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:21,477 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:23,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:23,021 INFO L93 Difference]: Finished difference Result 1013 states and 1362 transitions. [2020-08-18 16:09:23,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:09:23,021 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 16:09:23,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:23,031 INFO L225 Difference]: With dead ends: 1013 [2020-08-18 16:09:23,031 INFO L226 Difference]: Without dead ends: 787 [2020-08-18 16:09:23,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 16:09:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-08-18 16:09:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 690. [2020-08-18 16:09:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-08-18 16:09:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 848 transitions. [2020-08-18 16:09:23,194 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 848 transitions. Word has length 57 [2020-08-18 16:09:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:23,195 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 848 transitions. [2020-08-18 16:09:23,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:09:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 848 transitions. [2020-08-18 16:09:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 16:09:23,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:23,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:23,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:09:23,199 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:23,200 INFO L82 PathProgramCache]: Analyzing trace with hash -436303684, now seen corresponding path program 1 times [2020-08-18 16:09:23,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:23,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275833624] [2020-08-18 16:09:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,472 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:09:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:09:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:09:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:09:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:09:23,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275833624] [2020-08-18 16:09:23,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:09:23,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:09:23,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649082965] [2020-08-18 16:09:23,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:09:23,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:23,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:09:23,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:09:23,576 INFO L87 Difference]: Start difference. First operand 690 states and 848 transitions. Second operand 6 states. [2020-08-18 16:09:23,895 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:25,518 INFO L93 Difference]: Finished difference Result 1681 states and 2195 transitions. [2020-08-18 16:09:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 16:09:25,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 16:09:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:25,527 INFO L225 Difference]: With dead ends: 1681 [2020-08-18 16:09:25,527 INFO L226 Difference]: Without dead ends: 1015 [2020-08-18 16:09:25,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:09:25,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-08-18 16:09:25,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 948. [2020-08-18 16:09:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-18 16:09:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1172 transitions. [2020-08-18 16:09:25,708 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1172 transitions. Word has length 61 [2020-08-18 16:09:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:25,708 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1172 transitions. [2020-08-18 16:09:25,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:09:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1172 transitions. [2020-08-18 16:09:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 16:09:25,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:25,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:25,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:09:25,713 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:25,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:25,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1209411089, now seen corresponding path program 1 times [2020-08-18 16:09:25,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:25,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652584315] [2020-08-18 16:09:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,002 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:26,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:09:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:09:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 16:09:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 16:09:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 16:09:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 16:09:26,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652584315] [2020-08-18 16:09:26,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:26,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 16:09:26,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333595426] [2020-08-18 16:09:26,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:09:26,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:26,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:09:26,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:09:26,200 INFO L87 Difference]: Start difference. First operand 948 states and 1172 transitions. Second operand 10 states. [2020-08-18 16:09:26,761 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 16:09:27,300 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:29,275 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:30,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:30,909 INFO L93 Difference]: Finished difference Result 1803 states and 2319 transitions. [2020-08-18 16:09:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 16:09:30,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-18 16:09:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:30,918 INFO L225 Difference]: With dead ends: 1803 [2020-08-18 16:09:30,918 INFO L226 Difference]: Without dead ends: 1150 [2020-08-18 16:09:30,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 16:09:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-08-18 16:09:31,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1055. [2020-08-18 16:09:31,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-08-18 16:09:31,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1284 transitions. [2020-08-18 16:09:31,132 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1284 transitions. Word has length 89 [2020-08-18 16:09:31,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:31,132 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1284 transitions. [2020-08-18 16:09:31,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:09:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1284 transitions. [2020-08-18 16:09:31,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 16:09:31,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:31,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:31,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:09:31,137 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:31,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2033395005, now seen corresponding path program 1 times [2020-08-18 16:09:31,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:31,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295592606] [2020-08-18 16:09:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,378 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:31,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:09:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:09:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 16:09:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 16:09:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 16:09:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 16:09:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 16:09:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 16:09:31,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295592606] [2020-08-18 16:09:31,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:31,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 16:09:31,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717767456] [2020-08-18 16:09:31,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:09:31,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:31,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:09:31,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:09:31,648 INFO L87 Difference]: Start difference. First operand 1055 states and 1284 transitions. Second operand 10 states. [2020-08-18 16:09:32,627 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:32,880 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:09:33,135 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:33,361 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:34,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:34,540 INFO L93 Difference]: Finished difference Result 2230 states and 2894 transitions. [2020-08-18 16:09:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:09:34,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-18 16:09:34,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:34,551 INFO L225 Difference]: With dead ends: 2230 [2020-08-18 16:09:34,551 INFO L226 Difference]: Without dead ends: 1199 [2020-08-18 16:09:34,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:09:34,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-18 16:09:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1085. [2020-08-18 16:09:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-08-18 16:09:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1318 transitions. [2020-08-18 16:09:34,788 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1318 transitions. Word has length 130 [2020-08-18 16:09:34,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:34,789 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1318 transitions. [2020-08-18 16:09:34,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:09:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1318 transitions. [2020-08-18 16:09:34,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-18 16:09:34,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:34,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:34,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:09:34,793 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1477382459, now seen corresponding path program 1 times [2020-08-18 16:09:34,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:34,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200266477] [2020-08-18 16:09:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,134 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:35,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:09:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:09:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 16:09:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 16:09:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 16:09:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 16:09:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 16:09:35,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200266477] [2020-08-18 16:09:35,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:35,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:09:35,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093058649] [2020-08-18 16:09:35,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:09:35,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:35,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:09:35,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:09:35,370 INFO L87 Difference]: Start difference. First operand 1085 states and 1318 transitions. Second operand 12 states. [2020-08-18 16:09:35,843 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:36,070 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:36,286 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:36,930 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:37,191 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:37,415 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:38,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:38,496 INFO L93 Difference]: Finished difference Result 1969 states and 2463 transitions. [2020-08-18 16:09:38,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:09:38,497 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-18 16:09:38,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:38,504 INFO L225 Difference]: With dead ends: 1969 [2020-08-18 16:09:38,505 INFO L226 Difference]: Without dead ends: 908 [2020-08-18 16:09:38,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:09:38,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-08-18 16:09:38,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 856. [2020-08-18 16:09:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2020-08-18 16:09:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1029 transitions. [2020-08-18 16:09:38,665 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1029 transitions. Word has length 126 [2020-08-18 16:09:38,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:38,665 INFO L479 AbstractCegarLoop]: Abstraction has 856 states and 1029 transitions. [2020-08-18 16:09:38,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:09:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1029 transitions. [2020-08-18 16:09:38,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 16:09:38,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:38,669 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:38,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:09:38,669 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:38,670 INFO L82 PathProgramCache]: Analyzing trace with hash -41255168, now seen corresponding path program 1 times [2020-08-18 16:09:38,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:38,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282626421] [2020-08-18 16:09:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,049 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:39,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:09:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:09:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 16:09:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 16:09:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 16:09:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 16:09:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:09:39,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282626421] [2020-08-18 16:09:39,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:39,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 16:09:39,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459712050] [2020-08-18 16:09:39,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:09:39,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:39,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:09:39,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:09:39,244 INFO L87 Difference]: Start difference. First operand 856 states and 1029 transitions. Second operand 12 states. [2020-08-18 16:09:39,650 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:40,463 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:09:40,727 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:40,955 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:41,191 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:41,419 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:41,774 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:42,353 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:42,622 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:42,907 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:09:44,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:44,595 INFO L93 Difference]: Finished difference Result 2072 states and 2648 transitions. [2020-08-18 16:09:44,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 16:09:44,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-18 16:09:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:44,606 INFO L225 Difference]: With dead ends: 2072 [2020-08-18 16:09:44,606 INFO L226 Difference]: Without dead ends: 1389 [2020-08-18 16:09:44,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-18 16:09:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-08-18 16:09:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1217. [2020-08-18 16:09:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-08-18 16:09:44,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1483 transitions. [2020-08-18 16:09:44,796 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1483 transitions. Word has length 130 [2020-08-18 16:09:44,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:44,797 INFO L479 AbstractCegarLoop]: Abstraction has 1217 states and 1483 transitions. [2020-08-18 16:09:44,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:09:44,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1483 transitions. [2020-08-18 16:09:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-18 16:09:44,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:44,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:09:44,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:09:44,803 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:44,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:44,803 INFO L82 PathProgramCache]: Analyzing trace with hash -786970621, now seen corresponding path program 1 times [2020-08-18 16:09:44,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:44,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418561934] [2020-08-18 16:09:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,185 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:09:45,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:09:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:09:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:09:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 16:09:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:09:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:09:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:09:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:09:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:09:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:09:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:09:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:09:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:09:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 16:09:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 16:09:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 16:09:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-18 16:09:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:09:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-18 16:09:45,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418561934] [2020-08-18 16:09:45,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:09:45,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 16:09:45,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495832017] [2020-08-18 16:09:45,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:09:45,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:09:45,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:09:45,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:09:45,525 INFO L87 Difference]: Start difference. First operand 1217 states and 1483 transitions. Second operand 13 states. [2020-08-18 16:09:46,298 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:09:46,651 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:46,986 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:09:47,565 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:48,762 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:09:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:09:49,814 INFO L93 Difference]: Finished difference Result 2226 states and 2782 transitions. [2020-08-18 16:09:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 16:09:49,817 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-08-18 16:09:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:09:49,825 INFO L225 Difference]: With dead ends: 2226 [2020-08-18 16:09:49,825 INFO L226 Difference]: Without dead ends: 1233 [2020-08-18 16:09:49,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-18 16:09:49,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-08-18 16:09:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 911. [2020-08-18 16:09:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-08-18 16:09:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1058 transitions. [2020-08-18 16:09:50,032 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1058 transitions. Word has length 163 [2020-08-18 16:09:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:09:50,033 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1058 transitions. [2020-08-18 16:09:50,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:09:50,033 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1058 transitions. [2020-08-18 16:09:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-18 16:09:50,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:09:50,037 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-18 16:09:50,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:09:50,037 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:09:50,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:09:50,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1876724494, now seen corresponding path program 2 times [2020-08-18 16:09:50,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:09:50,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490790321] [2020-08-18 16:09:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:09:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:09:50,160 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:09:50,160 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:09:50,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:09:50,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:09:50 BoogieIcfgContainer [2020-08-18 16:09:50,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:09:50,212 INFO L168 Benchmark]: Toolchain (without parser) took 43806.96 ms. Allocated memory was 143.7 MB in the beginning and 713.6 MB in the end (delta: 569.9 MB). Free memory was 105.5 MB in the beginning and 647.4 MB in the end (delta: -542.0 MB). Peak memory consumption was 564.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:50,212 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:09:50,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.73 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 105.2 MB in the beginning and 170.2 MB in the end (delta: -65.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:50,214 INFO L168 Benchmark]: Boogie Preprocessor took 92.92 ms. Allocated memory is still 204.5 MB. Free memory was 170.2 MB in the beginning and 164.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:50,214 INFO L168 Benchmark]: RCFGBuilder took 1078.15 ms. Allocated memory was 204.5 MB in the beginning and 231.2 MB in the end (delta: 26.7 MB). Free memory was 164.1 MB in the beginning and 179.7 MB in the end (delta: -15.5 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:50,215 INFO L168 Benchmark]: TraceAbstraction took 42017.59 ms. Allocated memory was 231.2 MB in the beginning and 713.6 MB in the end (delta: 482.3 MB). Free memory was 178.4 MB in the beginning and 647.4 MB in the end (delta: -469.0 MB). Peak memory consumption was 550.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:09:50,218 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 613.73 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 105.2 MB in the beginning and 170.2 MB in the end (delta: -65.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.92 ms. Allocated memory is still 204.5 MB. Free memory was 170.2 MB in the beginning and 164.1 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1078.15 ms. Allocated memory was 204.5 MB in the beginning and 231.2 MB in the end (delta: 26.7 MB). Free memory was 164.1 MB in the beginning and 179.7 MB in the end (delta: -15.5 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42017.59 ms. Allocated memory was 231.2 MB in the beginning and 713.6 MB in the end (delta: 482.3 MB). Free memory was 178.4 MB in the beginning and 647.4 MB in the end (delta: -469.0 MB). Peak memory consumption was 550.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___2)) [L525] tmp___1 = __VERIFIER_nondet_int() [L527] COND FALSE !(\read(tmp___1)) [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.9s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 34.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1356 SDtfs, 3146 SDslu, 1750 SDs, 0 SdLazy, 8583 SolverSat, 2304 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 475 GetRequests, 314 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1217occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 1059 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1067 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 329447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 152/172 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...