/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:21:58,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:21:58,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:21:58,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:21:58,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:21:58,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:21:58,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:21:58,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:21:58,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:21:58,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:21:58,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:21:58,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:21:58,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:21:58,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:21:58,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:21:58,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:21:58,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:21:58,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:21:58,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:21:58,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:21:58,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:21:58,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:21:58,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:21:58,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:21:58,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:21:58,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:21:58,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:21:58,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:21:58,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:21:58,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:21:58,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:21:58,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:21:58,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:21:58,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:21:58,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:21:58,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:21:58,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:21:58,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:21:58,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:21:58,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:21:58,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:21:58,978 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 [2020-08-21 20:21:59,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:21:59,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:21:59,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:21:59,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:21:59,003 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:21:59,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:21:59,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:21:59,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:21:59,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:21:59,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:21:59,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:21:59,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:21:59,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:21:59,005 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:21:59,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:21:59,005 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:21:59,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:21:59,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:21:59,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:21:59,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:21:59,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:21:59,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:21:59,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:21:59,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:21:59,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:21:59,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:21:59,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:21:59,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:21:59,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:21:59,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:21:59,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:21:59,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:21:59,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:21:59,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:21:59,338 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:21:59,339 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-08-21 20:21:59,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31e46edcc/1c3c702915214ba2b3a0898c494c7724/FLAG84d49a1e4 [2020-08-21 20:21:59,929 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:21:59,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-08-21 20:21:59,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31e46edcc/1c3c702915214ba2b3a0898c494c7724/FLAG84d49a1e4 [2020-08-21 20:22:00,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31e46edcc/1c3c702915214ba2b3a0898c494c7724 [2020-08-21 20:22:00,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:22:00,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:22:00,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:22:00,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:22:00,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:22:00,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:22:00" (1/1) ... [2020-08-21 20:22:00,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e399bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:00, skipping insertion in model container [2020-08-21 20:22:00,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:22:00" (1/1) ... [2020-08-21 20:22:00,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:22:00,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:22:00,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:22:00,772 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:22:00,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:22:00,926 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:22:00,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:00 WrapperNode [2020-08-21 20:22:00,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:22:00,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:22:00,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:22:00,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:22:00,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:00" (1/1) ... [2020-08-21 20:22:00,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:00" (1/1) ... [2020-08-21 20:22:00,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:00" (1/1) ... [2020-08-21 20:22:00,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:00" (1/1) ... [2020-08-21 20:22:00,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:00" (1/1) ... [2020-08-21 20:22:01,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:00" (1/1) ... [2020-08-21 20:22:01,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:00" (1/1) ... [2020-08-21 20:22:01,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:22:01,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:22:01,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:22:01,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:22:01,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:00" (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 [2020-08-21 20:22:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:22:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:22:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 20:22:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 20:22:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 20:22:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 20:22:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 20:22:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 20:22:01,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 20:22:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 20:22:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 20:22:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 20:22:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 20:22:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 20:22:01,110 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 20:22:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 20:22:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 20:22:01,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 20:22:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 20:22:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 20:22:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 20:22:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 20:22:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 20:22:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 20:22:01,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 20:22:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 20:22:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 20:22:01,113 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 20:22:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 20:22:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 20:22:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 20:22:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:22:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 20:22:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 20:22:01,114 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 20:22:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 20:22:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 20:22:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 20:22:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 20:22:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 20:22:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:22:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:22:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 20:22:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 20:22:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:22:01,117 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:22:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 20:22:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:22:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:22:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:22:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:22:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 20:22:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:22:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 20:22:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 20:22:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:22:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 20:22:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 20:22:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:22:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 20:22:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 20:22:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 20:22:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 20:22:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 20:22:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 20:22:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 20:22:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 20:22:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 20:22:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 20:22:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 20:22:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 20:22:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 20:22:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 20:22:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 20:22:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 20:22:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 20:22:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 20:22:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 20:22:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 20:22:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 20:22:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 20:22:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 20:22:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 20:22:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 20:22:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 20:22:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 20:22:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 20:22:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 20:22:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 20:22:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:22:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 20:22:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:22:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:22:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:22:02,213 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:22:02,214 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 20:22:02,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:22:02 BoogieIcfgContainer [2020-08-21 20:22:02,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:22:02,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:22:02,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:22:02,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:22:02,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:22:00" (1/3) ... [2020-08-21 20:22:02,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371ea917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:22:02, skipping insertion in model container [2020-08-21 20:22:02,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:00" (2/3) ... [2020-08-21 20:22:02,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371ea917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:22:02, skipping insertion in model container [2020-08-21 20:22:02,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:22:02" (3/3) ... [2020-08-21 20:22:02,227 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product42.cil.c [2020-08-21 20:22:02,238 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:22:02,246 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:22:02,261 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:22:02,285 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:22:02,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:22:02,286 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:22:02,286 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:22:02,286 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:22:02,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:22:02,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:22:02,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:22:02,309 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 20:22:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 20:22:02,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:02,320 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] [2020-08-21 20:22:02,320 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:02,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:02,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1331255295, now seen corresponding path program 1 times [2020-08-21 20:22:02,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:02,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872826482] [2020-08-21 20:22:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:03,071 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:03,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:03,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:03,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:03,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:03,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:03,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 20:22:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 20:22:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:22:03,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872826482] [2020-08-21 20:22:03,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:22:03,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:22:03,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565202190] [2020-08-21 20:22:03,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:22:03,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:03,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:22:03,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:22:03,273 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-21 20:22:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:04,358 INFO L93 Difference]: Finished difference Result 284 states and 370 transitions. [2020-08-21 20:22:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 20:22:04,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 20:22:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:04,374 INFO L225 Difference]: With dead ends: 284 [2020-08-21 20:22:04,374 INFO L226 Difference]: Without dead ends: 159 [2020-08-21 20:22:04,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:22:04,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-21 20:22:04,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 126. [2020-08-21 20:22:04,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 20:22:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-21 20:22:04,467 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 51 [2020-08-21 20:22:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:04,468 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-21 20:22:04,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:22:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-21 20:22:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 20:22:04,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:04,471 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] [2020-08-21 20:22:04,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:22:04,472 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:04,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:04,472 INFO L82 PathProgramCache]: Analyzing trace with hash -42152189, now seen corresponding path program 1 times [2020-08-21 20:22:04,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:04,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853623762] [2020-08-21 20:22:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:04,804 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:04,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:04,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:04,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:04,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:04,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:04,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:22:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:04,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:22:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:22:04,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853623762] [2020-08-21 20:22:04,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:22:04,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 20:22:04,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587038430] [2020-08-21 20:22:04,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 20:22:04,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:04,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 20:22:04,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:22:04,892 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 5 states. [2020-08-21 20:22:05,335 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:22:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:06,150 INFO L93 Difference]: Finished difference Result 225 states and 277 transitions. [2020-08-21 20:22:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 20:22:06,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 20:22:06,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:06,154 INFO L225 Difference]: With dead ends: 225 [2020-08-21 20:22:06,155 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 20:22:06,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:22:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 20:22:06,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-21 20:22:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 20:22:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-21 20:22:06,194 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 52 [2020-08-21 20:22:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:06,195 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-21 20:22:06,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 20:22:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-21 20:22:06,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 20:22:06,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:06,198 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] [2020-08-21 20:22:06,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:22:06,198 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:06,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:06,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1757460962, now seen corresponding path program 1 times [2020-08-21 20:22:06,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:06,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460596991] [2020-08-21 20:22:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:06,563 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:06,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:06,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:06,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:06,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:06,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:06,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 20:22:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:06,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 20:22:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:22:06,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460596991] [2020-08-21 20:22:06,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:22:06,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:22:06,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410117848] [2020-08-21 20:22:06,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:22:06,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:06,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:22:06,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:22:06,677 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 9 states. [2020-08-21 20:22:07,112 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:07,435 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:22:07,700 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:22:07,974 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:22:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:09,078 INFO L93 Difference]: Finished difference Result 238 states and 296 transitions. [2020-08-21 20:22:09,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 20:22:09,081 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 20:22:09,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:09,084 INFO L225 Difference]: With dead ends: 238 [2020-08-21 20:22:09,084 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 20:22:09,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:22:09,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 20:22:09,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-21 20:22:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 20:22:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-08-21 20:22:09,124 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 57 [2020-08-21 20:22:09,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:09,125 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-08-21 20:22:09,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:22:09,125 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-08-21 20:22:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 20:22:09,128 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:09,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:22:09,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:22:09,128 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:09,129 INFO L82 PathProgramCache]: Analyzing trace with hash 2060596455, now seen corresponding path program 1 times [2020-08-21 20:22:09,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:09,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301872651] [2020-08-21 20:22:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:09,392 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:09,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:09,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:09,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:09,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:09,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:09,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:09,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:22:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:09,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:22:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 20:22:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:22:09,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301872651] [2020-08-21 20:22:09,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:22:09,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:22:09,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893190898] [2020-08-21 20:22:09,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:22:09,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:09,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:22:09,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:22:09,482 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 7 states. [2020-08-21 20:22:09,819 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:11,049 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:22:11,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:11,748 INFO L93 Difference]: Finished difference Result 328 states and 412 transitions. [2020-08-21 20:22:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 20:22:11,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-21 20:22:11,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:11,757 INFO L225 Difference]: With dead ends: 328 [2020-08-21 20:22:11,757 INFO L226 Difference]: Without dead ends: 239 [2020-08-21 20:22:11,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:22:11,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-08-21 20:22:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 190. [2020-08-21 20:22:11,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-21 20:22:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 219 transitions. [2020-08-21 20:22:11,819 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 219 transitions. Word has length 65 [2020-08-21 20:22:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:11,820 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 219 transitions. [2020-08-21 20:22:11,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:22:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 219 transitions. [2020-08-21 20:22:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 20:22:11,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:11,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:22:11,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:22:11,822 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:11,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1161742780, now seen corresponding path program 1 times [2020-08-21 20:22:11,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:11,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106513243] [2020-08-21 20:22:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,121 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:22:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:22:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 20:22:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 20:22:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:22:12,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106513243] [2020-08-21 20:22:12,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:22:12,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 20:22:12,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612057777] [2020-08-21 20:22:12,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:22:12,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:12,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:22:12,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:22:12,239 INFO L87 Difference]: Start difference. First operand 190 states and 219 transitions. Second operand 9 states. [2020-08-21 20:22:12,590 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:13,586 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:22:13,890 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:14,413 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:22:14,672 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:22:15,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:15,579 INFO L93 Difference]: Finished difference Result 566 states and 718 transitions. [2020-08-21 20:22:15,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 20:22:15,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-21 20:22:15,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:15,584 INFO L225 Difference]: With dead ends: 566 [2020-08-21 20:22:15,584 INFO L226 Difference]: Without dead ends: 404 [2020-08-21 20:22:15,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 20:22:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-08-21 20:22:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 328. [2020-08-21 20:22:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-08-21 20:22:15,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 378 transitions. [2020-08-21 20:22:15,656 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 378 transitions. Word has length 79 [2020-08-21 20:22:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:15,657 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 378 transitions. [2020-08-21 20:22:15,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:22:15,657 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 378 transitions. [2020-08-21 20:22:15,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 20:22:15,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:15,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:22:15,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:22:15,660 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:15,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:15,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1027537504, now seen corresponding path program 1 times [2020-08-21 20:22:15,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:15,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370467933] [2020-08-21 20:22:15,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:15,934 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:15,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:15,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:15,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:15,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:15,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 20:22:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:16,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:22:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:16,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:22:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 20:22:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:16,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 20:22:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:22:16,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370467933] [2020-08-21 20:22:16,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:22:16,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:22:16,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856947494] [2020-08-21 20:22:16,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:22:16,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:16,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:22:16,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:22:16,043 INFO L87 Difference]: Start difference. First operand 328 states and 378 transitions. Second operand 10 states. [2020-08-21 20:22:16,476 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:17,661 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:18,616 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:22:18,846 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:22:19,116 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:22:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:19,461 INFO L93 Difference]: Finished difference Result 742 states and 925 transitions. [2020-08-21 20:22:19,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 20:22:19,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-21 20:22:19,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:19,465 INFO L225 Difference]: With dead ends: 742 [2020-08-21 20:22:19,466 INFO L226 Difference]: Without dead ends: 442 [2020-08-21 20:22:19,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-21 20:22:19,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-21 20:22:19,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 327. [2020-08-21 20:22:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-08-21 20:22:19,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 375 transitions. [2020-08-21 20:22:19,535 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 375 transitions. Word has length 83 [2020-08-21 20:22:19,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:19,536 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 375 transitions. [2020-08-21 20:22:19,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:22:19,536 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 375 transitions. [2020-08-21 20:22:19,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 20:22:19,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:19,538 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:22:19,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:22:19,538 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:19,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:19,539 INFO L82 PathProgramCache]: Analyzing trace with hash 928544888, now seen corresponding path program 1 times [2020-08-21 20:22:19,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:19,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211764010] [2020-08-21 20:22:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,820 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:19,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 20:22:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:22:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:22:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 20:22:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:19,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 20:22:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:22:20,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211764010] [2020-08-21 20:22:20,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:22:20,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:22:20,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207271111] [2020-08-21 20:22:20,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:22:20,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:20,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:22:20,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:22:20,026 INFO L87 Difference]: Start difference. First operand 327 states and 375 transitions. Second operand 10 states. [2020-08-21 20:22:21,033 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 20:22:21,305 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 20:22:21,551 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:22:21,799 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:22:22,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:22,728 INFO L93 Difference]: Finished difference Result 749 states and 953 transitions. [2020-08-21 20:22:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 20:22:22,728 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-08-21 20:22:22,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:22,731 INFO L225 Difference]: With dead ends: 749 [2020-08-21 20:22:22,732 INFO L226 Difference]: Without dead ends: 450 [2020-08-21 20:22:22,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:22:22,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-08-21 20:22:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 337. [2020-08-21 20:22:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-08-21 20:22:22,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 385 transitions. [2020-08-21 20:22:22,801 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 385 transitions. Word has length 99 [2020-08-21 20:22:22,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:22,802 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 385 transitions. [2020-08-21 20:22:22,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:22:22,802 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 385 transitions. [2020-08-21 20:22:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 20:22:22,804 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:22,804 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:22:22,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 20:22:22,804 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:22,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1120842954, now seen corresponding path program 1 times [2020-08-21 20:22:22,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:22,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127452988] [2020-08-21 20:22:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,075 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:23,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 20:22:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:22:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:22:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 20:22:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 20:22:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:22:23,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127452988] [2020-08-21 20:22:23,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:22:23,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 20:22:23,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618638377] [2020-08-21 20:22:23,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:22:23,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:23,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:22:23,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:22:23,231 INFO L87 Difference]: Start difference. First operand 337 states and 385 transitions. Second operand 12 states. [2020-08-21 20:22:23,927 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:22:24,233 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:22:24,529 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:22:25,227 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:22:25,478 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:22:25,726 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:22:26,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:26,957 INFO L93 Difference]: Finished difference Result 769 states and 975 transitions. [2020-08-21 20:22:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 20:22:26,957 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-08-21 20:22:26,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:26,961 INFO L225 Difference]: With dead ends: 769 [2020-08-21 20:22:26,961 INFO L226 Difference]: Without dead ends: 460 [2020-08-21 20:22:26,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 20:22:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-08-21 20:22:27,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 345. [2020-08-21 20:22:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-21 20:22:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-21 20:22:27,055 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 99 [2020-08-21 20:22:27,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:27,056 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-21 20:22:27,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:22:27,056 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-21 20:22:27,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 20:22:27,060 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:27,060 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:22:27,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 20:22:27,060 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:27,061 INFO L82 PathProgramCache]: Analyzing trace with hash -151261931, now seen corresponding path program 1 times [2020-08-21 20:22:27,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:27,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000004696] [2020-08-21 20:22:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,357 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:27,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 20:22:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:22:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:22:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 20:22:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 20:22:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 20:22:27,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000004696] [2020-08-21 20:22:27,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:22:27,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:22:27,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003983631] [2020-08-21 20:22:27,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:22:27,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:27,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:22:27,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:22:27,513 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 8 states. [2020-08-21 20:22:27,896 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:28,448 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:30,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:30,731 INFO L93 Difference]: Finished difference Result 1097 states and 1430 transitions. [2020-08-21 20:22:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 20:22:30,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-08-21 20:22:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:30,737 INFO L225 Difference]: With dead ends: 1097 [2020-08-21 20:22:30,738 INFO L226 Difference]: Without dead ends: 780 [2020-08-21 20:22:30,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-21 20:22:30,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-08-21 20:22:30,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 635. [2020-08-21 20:22:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-08-21 20:22:30,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 745 transitions. [2020-08-21 20:22:30,840 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 745 transitions. Word has length 99 [2020-08-21 20:22:30,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:30,840 INFO L479 AbstractCegarLoop]: Abstraction has 635 states and 745 transitions. [2020-08-21 20:22:30,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:22:30,841 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 745 transitions. [2020-08-21 20:22:30,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-21 20:22:30,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:30,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:22:30,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 20:22:30,843 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:30,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:30,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1889082245, now seen corresponding path program 1 times [2020-08-21 20:22:30,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:30,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27030712] [2020-08-21 20:22:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,135 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:31,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:22:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 20:22:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 20:22:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:22:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 20:22:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 20:22:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 20:22:31,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27030712] [2020-08-21 20:22:31,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:22:31,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 20:22:31,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130404560] [2020-08-21 20:22:31,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 20:22:31,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:31,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 20:22:31,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 20:22:31,499 INFO L87 Difference]: Start difference. First operand 635 states and 745 transitions. Second operand 18 states. [2020-08-21 20:22:32,013 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:32,343 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:22:32,613 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:22:32,873 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:22:33,588 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:34,632 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:22:34,977 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:22:35,270 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:22:35,538 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:22:35,907 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:22:36,205 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 20:22:36,828 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 20:22:37,417 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 20:22:39,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:39,255 INFO L93 Difference]: Finished difference Result 1355 states and 1681 transitions. [2020-08-21 20:22:39,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-21 20:22:39,256 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2020-08-21 20:22:39,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:39,260 INFO L225 Difference]: With dead ends: 1355 [2020-08-21 20:22:39,261 INFO L226 Difference]: Without dead ends: 748 [2020-08-21 20:22:39,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=474, Invalid=1878, Unknown=0, NotChecked=0, Total=2352 [2020-08-21 20:22:39,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-08-21 20:22:39,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 612. [2020-08-21 20:22:39,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-08-21 20:22:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 706 transitions. [2020-08-21 20:22:39,402 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 706 transitions. Word has length 103 [2020-08-21 20:22:39,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:39,402 INFO L479 AbstractCegarLoop]: Abstraction has 612 states and 706 transitions. [2020-08-21 20:22:39,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 20:22:39,403 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 706 transitions. [2020-08-21 20:22:39,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-21 20:22:39,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:39,408 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:22:39,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 20:22:39,409 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:39,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:39,409 INFO L82 PathProgramCache]: Analyzing trace with hash -75649928, now seen corresponding path program 1 times [2020-08-21 20:22:39,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:39,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309291610] [2020-08-21 20:22:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,729 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:39,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:22:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 20:22:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:22:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:22:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 20:22:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 20:22:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 20:22:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 20:22:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 20:22:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 20:22:39,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309291610] [2020-08-21 20:22:39,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:22:39,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 20:22:39,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643709284] [2020-08-21 20:22:39,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 20:22:39,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:39,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 20:22:39,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-21 20:22:39,926 INFO L87 Difference]: Start difference. First operand 612 states and 706 transitions. Second operand 9 states. [2020-08-21 20:22:40,360 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:42,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:42,801 INFO L93 Difference]: Finished difference Result 1176 states and 1496 transitions. [2020-08-21 20:22:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 20:22:42,802 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-08-21 20:22:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:42,810 INFO L225 Difference]: With dead ends: 1176 [2020-08-21 20:22:42,810 INFO L226 Difference]: Without dead ends: 1173 [2020-08-21 20:22:42,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-08-21 20:22:42,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-08-21 20:22:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 957. [2020-08-21 20:22:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-08-21 20:22:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1109 transitions. [2020-08-21 20:22:43,015 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1109 transitions. Word has length 139 [2020-08-21 20:22:43,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:43,016 INFO L479 AbstractCegarLoop]: Abstraction has 957 states and 1109 transitions. [2020-08-21 20:22:43,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 20:22:43,016 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1109 transitions. [2020-08-21 20:22:43,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-08-21 20:22:43,020 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:43,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 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] [2020-08-21 20:22:43,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 20:22:43,021 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:43,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:43,022 INFO L82 PathProgramCache]: Analyzing trace with hash -397466106, now seen corresponding path program 1 times [2020-08-21 20:22:43,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:43,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703593851] [2020-08-21 20:22:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,414 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:22:43,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:22:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:22:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:22:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 20:22:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:22:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 20:22:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:22:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:22:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:22:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 20:22:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 20:22:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:22:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 20:22:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:22:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 20:22:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 20:22:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-21 20:22:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-21 20:22:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:22:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-08-21 20:22:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-21 20:22:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:22:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 37 proven. 18 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-08-21 20:22:43,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703593851] [2020-08-21 20:22:43,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:22:43,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 20:22:43,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33002795] [2020-08-21 20:22:43,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 20:22:43,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:22:43,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 20:22:43,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-21 20:22:43,676 INFO L87 Difference]: Start difference. First operand 957 states and 1109 transitions. Second operand 13 states. [2020-08-21 20:22:44,185 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:44,789 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:45,309 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 20:22:46,460 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 20:22:47,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:22:47,808 INFO L93 Difference]: Finished difference Result 1988 states and 2473 transitions. [2020-08-21 20:22:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 20:22:47,809 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 186 [2020-08-21 20:22:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:22:47,819 INFO L225 Difference]: With dead ends: 1988 [2020-08-21 20:22:47,819 INFO L226 Difference]: Without dead ends: 1181 [2020-08-21 20:22:47,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 20:22:47,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2020-08-21 20:22:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1012. [2020-08-21 20:22:48,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1012 states. [2020-08-21 20:22:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1178 transitions. [2020-08-21 20:22:48,045 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1178 transitions. Word has length 186 [2020-08-21 20:22:48,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:22:48,046 INFO L479 AbstractCegarLoop]: Abstraction has 1012 states and 1178 transitions. [2020-08-21 20:22:48,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 20:22:48,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1178 transitions. [2020-08-21 20:22:48,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-08-21 20:22:48,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:48,050 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 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] [2020-08-21 20:22:48,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 20:22:48,050 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:48,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:48,051 INFO L82 PathProgramCache]: Analyzing trace with hash 974341192, now seen corresponding path program 1 times [2020-08-21 20:22:48,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:48,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762029024] [2020-08-21 20:22:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:22:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 20:22:48,115 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 20:22:48,115 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 20:22:48,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 20:22:48,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:22:48 BoogieIcfgContainer [2020-08-21 20:22:48,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:22:48,164 INFO L168 Benchmark]: Toolchain (without parser) took 47894.73 ms. Allocated memory was 144.7 MB in the beginning and 796.4 MB in the end (delta: 651.7 MB). Free memory was 100.5 MB in the beginning and 660.1 MB in the end (delta: -559.6 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. [2020-08-21 20:22:48,164 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 120.2 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 20:22:48,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.47 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 100.3 MB in the beginning and 167.2 MB in the end (delta: -66.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-08-21 20:22:48,167 INFO L168 Benchmark]: Boogie Preprocessor took 103.90 ms. Allocated memory is still 200.8 MB. Free memory was 167.2 MB in the beginning and 163.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-21 20:22:48,176 INFO L168 Benchmark]: RCFGBuilder took 1187.14 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 163.0 MB in the beginning and 192.3 MB in the end (delta: -29.3 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2020-08-21 20:22:48,181 INFO L168 Benchmark]: TraceAbstraction took 45941.02 ms. Allocated memory was 231.7 MB in the beginning and 796.4 MB in the end (delta: 564.7 MB). Free memory was 192.3 MB in the beginning and 660.1 MB in the end (delta: -467.8 MB). Peak memory consumption was 96.9 MB. Max. memory is 7.1 GB. [2020-08-21 20:22:48,189 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 120.2 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.47 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 100.3 MB in the beginning and 167.2 MB in the end (delta: -66.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.90 ms. Allocated memory is still 200.8 MB. Free memory was 167.2 MB in the beginning and 163.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1187.14 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 163.0 MB in the beginning and 192.3 MB in the end (delta: -29.3 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45941.02 ms. Allocated memory was 231.7 MB in the beginning and 796.4 MB in the end (delta: 564.7 MB). Free memory was 192.3 MB in the beginning and 660.1 MB in the end (delta: -467.8 MB). Peak memory consumption was 96.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 844]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L486] int pumpRunning = 0; [L487] int systemActive = 1; [L666] int methAndRunningLastTime ; [L743] int cleanupTimeShifts = 4; [L850] int waterLevel = 1; [L851] int methaneLevelCritical = 0; [L817] int retValue_acc ; [L818] int tmp ; [L822] FCALL select_helpers() [L823] FCALL select_features() [L824] CALL, EXPR valid_product() [L734] int retValue_acc ; [L737] retValue_acc = 1 [L738] return (retValue_acc); [L824] RET, EXPR valid_product() [L824] tmp = valid_product() [L826] COND TRUE \read(tmp) [L828] FCALL setup() [L829] CALL runTest() [L810] CALL __utac_acc__Specification2_spec__1() [L671] methAndRunningLastTime = 0 [L810] RET __utac_acc__Specification2_spec__1() [L811] CALL test() [L412] int splverifierCounter ; [L413] int tmp ; [L414] int tmp___0 ; [L415] int tmp___1 ; [L416] int tmp___2 ; [L419] splverifierCounter = 0 [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp) [L433] CALL waterRise() [L868] COND TRUE waterLevel < 2 [L869] waterLevel = waterLevel + 1 [L433] RET waterRise() [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp___0)) [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND FALSE !(\read(pumpRunning)) [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND TRUE ! pumpRunning [L528] CALL, EXPR isHighWaterLevel() [L638] int retValue_acc ; [L639] int tmp ; [L640] int tmp___0 ; [L644] CALL, EXPR isHighWaterSensorDry() [L930] int retValue_acc ; [L933] COND FALSE !(waterLevel < 2) [L937] retValue_acc = 0 [L938] return (retValue_acc); [L644] RET, EXPR isHighWaterSensorDry() [L644] tmp = isHighWaterSensorDry() [L646] COND FALSE !(\read(tmp)) [L649] tmp___0 = 1 [L651] retValue_acc = tmp___0 [L652] return (retValue_acc); [L528] RET, EXPR isHighWaterLevel() [L528] tmp = isHighWaterLevel() [L530] COND TRUE \read(tmp) [L532] CALL activatePump() [L557] int tmp ; [L561] CALL, EXPR isMethaneAlarm() [L582] int retValue_acc ; [L586] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L586] RET, EXPR isMethaneLevelCritical() [L586] retValue_acc = isMethaneLevelCritical() [L588] return (retValue_acc); [L561] RET, EXPR isMethaneAlarm() [L561] tmp = isMethaneAlarm() [L563] COND FALSE !(\read(tmp)) [L567] CALL activatePump__wrappee__highWaterSensor() [L551] pumpRunning = 1 [L567] RET activatePump__wrappee__highWaterSensor() [L532] RET activatePump() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND FALSE !(\read(tmp)) [L699] methAndRunningLastTime = 0 [L509] RET __utac_acc__Specification2_spec__2() [L466] RET timeShift() [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND FALSE !(\read(tmp)) [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp___0) [L443] CALL changeMethaneLevel() [L880] COND FALSE !(\read(methaneLevelCritical)) [L883] methaneLevelCritical = 1 [L443] RET changeMethaneLevel() [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND TRUE \read(pumpRunning) [L496] CALL lowerWaterLevel() [L856] COND TRUE waterLevel > 0 [L857] waterLevel = waterLevel - 1 [L496] RET lowerWaterLevel() [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND FALSE !(! pumpRunning) [L541] FCALL processEnvironment__wrappee__base() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND TRUE \read(tmp) [L685] CALL, EXPR isPumpRunning() [L593] int retValue_acc ; [L596] retValue_acc = pumpRunning [L597] return (retValue_acc); [L685] RET, EXPR isPumpRunning() [L685] tmp___0 = isPumpRunning() [L687] COND TRUE \read(tmp___0) [L688] COND FALSE !(\read(methAndRunningLastTime)) [L693] methAndRunningLastTime = 1 [L509] RET __utac_acc__Specification2_spec__2() [L466] RET timeShift() [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp) [L433] CALL waterRise() [L868] COND TRUE waterLevel < 2 [L869] waterLevel = waterLevel + 1 [L433] RET waterRise() [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp___0)) [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND TRUE \read(pumpRunning) [L496] CALL lowerWaterLevel() [L856] COND TRUE waterLevel > 0 [L857] waterLevel = waterLevel - 1 [L496] RET lowerWaterLevel() [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND FALSE !(! pumpRunning) [L541] FCALL processEnvironment__wrappee__base() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND TRUE \read(tmp) [L685] CALL, EXPR isPumpRunning() [L593] int retValue_acc ; [L596] retValue_acc = pumpRunning [L597] return (retValue_acc); [L685] RET, EXPR isPumpRunning() [L685] tmp___0 = isPumpRunning() [L687] COND TRUE \read(tmp___0) [L688] COND TRUE \read(methAndRunningLastTime) [L690] CALL __automaton_fail() [L844] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.8s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 38.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1443 SDtfs, 3981 SDslu, 1933 SDs, 0 SdLazy, 9188 SolverSat, 2823 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 653 GetRequests, 412 SyntacticMatches, 6 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 1231 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 1298 NumberOfCodeBlocks, 1298 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1100 ConstructedInterpolants, 0 QuantifiedInterpolants, 414654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 127/149 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...