/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:18:13,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:18:13,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:18:13,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:18:13,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:18:13,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:18:13,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:18:13,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:18:13,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:18:13,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:18:13,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:18:13,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:18:13,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:18:13,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:18:13,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:18:13,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:18:13,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:18:13,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:18:13,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:18:13,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:18:13,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:18:13,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:18:13,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:18:13,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:18:13,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:18:13,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:18:13,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:18:13,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:18:13,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:18:13,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:18:13,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:18:13,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:18:13,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:18:13,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:18:13,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:18:13,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:18:13,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:18:13,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:18:13,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:18:13,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:18:13,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:18:13,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 19:18:13,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:18:13,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:18:13,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:18:13,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:18:13,119 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:18:13,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:18:13,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:18:13,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:18:13,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:18:13,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:18:13,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:18:13,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:18:13,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:18:13,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:18:13,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:18:13,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:18:13,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:18:13,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:18:13,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:18:13,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:18:13,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:18:13,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:18:13,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:18:13,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:18:13,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:18:13,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:18:13,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:18:13,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:18:13,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:18:13,124 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=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:18:13,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:18:13,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:18:13,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:18:13,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:18:13,437 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:18:13,439 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-18 19:18:13,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc31076de/8ef7b5a0192149828174064a43fe85fc/FLAGbf03e863b [2020-08-18 19:18:14,139 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:18:14,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-18 19:18:14,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc31076de/8ef7b5a0192149828174064a43fe85fc/FLAGbf03e863b [2020-08-18 19:18:14,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc31076de/8ef7b5a0192149828174064a43fe85fc [2020-08-18 19:18:14,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:18:14,411 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:18:14,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:18:14,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:18:14,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:18:14,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:18:14" (1/1) ... [2020-08-18 19:18:14,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327c857d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:14, skipping insertion in model container [2020-08-18 19:18:14,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:18:14" (1/1) ... [2020-08-18 19:18:14,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:18:14,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:18:14,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:18:14,880 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:18:15,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:18:15,065 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:18:15,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:15 WrapperNode [2020-08-18 19:18:15,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:18:15,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:18:15,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:18:15,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:18:15,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:15" (1/1) ... [2020-08-18 19:18:15,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:15" (1/1) ... [2020-08-18 19:18:15,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:15" (1/1) ... [2020-08-18 19:18:15,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:15" (1/1) ... [2020-08-18 19:18:15,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:15" (1/1) ... [2020-08-18 19:18:15,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:15" (1/1) ... [2020-08-18 19:18:15,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:15" (1/1) ... [2020-08-18 19:18:15,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:18:15,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:18:15,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:18:15,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:18:15,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:18:15,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:18:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:18:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 19:18:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 19:18:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 19:18:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 19:18:15,271 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 19:18:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 19:18:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 19:18:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 19:18:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 19:18:15,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 19:18:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 19:18:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 19:18:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 19:18:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 19:18:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 19:18:15,273 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 19:18:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 19:18:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 19:18:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 19:18:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 19:18:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 19:18:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 19:18:15,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:18:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 19:18:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 19:18:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 19:18:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 19:18:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 19:18:15,275 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 19:18:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 19:18:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 19:18:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 19:18:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 19:18:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 19:18:15,276 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 19:18:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 19:18:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 19:18:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 19:18:15,277 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 19:18:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:18:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:18:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 19:18:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 19:18:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 19:18:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 19:18:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 19:18:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 19:18:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 19:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 19:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 19:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 19:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 19:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 19:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 19:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 19:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 19:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 19:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 19:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 19:18:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 19:18:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 19:18:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 19:18:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 19:18:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 19:18:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 19:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 19:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 19:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 19:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 19:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 19:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 19:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 19:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 19:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 19:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 19:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 19:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 19:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 19:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 19:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 19:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 19:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 19:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:18:16,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:18:16,451 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 19:18:16,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:18:16 BoogieIcfgContainer [2020-08-18 19:18:16,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:18:16,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:18:16,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:18:16,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:18:16,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:18:14" (1/3) ... [2020-08-18 19:18:16,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed0771d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:18:16, skipping insertion in model container [2020-08-18 19:18:16,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:18:15" (2/3) ... [2020-08-18 19:18:16,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed0771d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:18:16, skipping insertion in model container [2020-08-18 19:18:16,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:18:16" (3/3) ... [2020-08-18 19:18:16,465 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2020-08-18 19:18:16,476 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:18:16,484 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:18:16,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:18:16,520 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:18:16,521 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:18:16,521 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:18:16,521 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:18:16,521 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:18:16,522 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:18:16,522 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:18:16,522 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:18:16,546 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-18 19:18:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 19:18:16,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:16,558 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] [2020-08-18 19:18:16,558 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:16,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:16,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1550424879, now seen corresponding path program 1 times [2020-08-18 19:18:16,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:16,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82151901] [2020-08-18 19:18:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:17,303 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:17,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:17,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:17,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:17,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:17,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:17,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:17,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:18:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:17,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:18:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:18:17,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82151901] [2020-08-18 19:18:17,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:17,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:18:17,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814346949] [2020-08-18 19:18:17,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:18:17,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:17,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:18:17,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:18:17,498 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-18 19:18:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:18,674 INFO L93 Difference]: Finished difference Result 312 states and 407 transitions. [2020-08-18 19:18:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:18:18,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 19:18:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:18,691 INFO L225 Difference]: With dead ends: 312 [2020-08-18 19:18:18,691 INFO L226 Difference]: Without dead ends: 174 [2020-08-18 19:18:18,696 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 [2020-08-18 19:18:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-18 19:18:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-08-18 19:18:18,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 19:18:18,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-18 19:18:18,795 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2020-08-18 19:18:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:18,795 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-18 19:18:18,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:18:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-18 19:18:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 19:18:18,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:18,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:18,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:18:18,800 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:18,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2147140265, now seen corresponding path program 1 times [2020-08-18 19:18:18,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:18,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506390577] [2020-08-18 19:18:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,134 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:19,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:18:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 19:18:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:18:19,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506390577] [2020-08-18 19:18:19,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:19,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:18:19,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761015039] [2020-08-18 19:18:19,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:18:19,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:19,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:18:19,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:18:19,189 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 5 states. [2020-08-18 19:18:19,635 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:20,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:20,540 INFO L93 Difference]: Finished difference Result 253 states and 314 transitions. [2020-08-18 19:18:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:18:20,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 19:18:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:20,552 INFO L225 Difference]: With dead ends: 253 [2020-08-18 19:18:20,553 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 19:18:20,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:18:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 19:18:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-18 19:18:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 19:18:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-18 19:18:20,621 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2020-08-18 19:18:20,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:20,622 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-18 19:18:20,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:18:20,622 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-18 19:18:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 19:18:20,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:20,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:20,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:18:20,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:20,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:20,635 INFO L82 PathProgramCache]: Analyzing trace with hash 871775649, now seen corresponding path program 1 times [2020-08-18 19:18:20,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:20,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780048678] [2020-08-18 19:18:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:20,945 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:20,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:20,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:20,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:20,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:21,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:21,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 19:18:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:21,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:18:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:18:21,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780048678] [2020-08-18 19:18:21,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:21,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:18:21,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019847579] [2020-08-18 19:18:21,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:18:21,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:21,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:18:21,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:18:21,080 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2020-08-18 19:18:21,429 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:21,759 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:21,999 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:22,231 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:23,599 INFO L93 Difference]: Finished difference Result 266 states and 333 transitions. [2020-08-18 19:18:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:18:23,600 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 19:18:23,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:23,603 INFO L225 Difference]: With dead ends: 266 [2020-08-18 19:18:23,603 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 19:18:23,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:18:23,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 19:18:23,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-18 19:18:23,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 19:18:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-18 19:18:23,685 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 57 [2020-08-18 19:18:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:23,688 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-18 19:18:23,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:18:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-18 19:18:23,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 19:18:23,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:23,690 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] [2020-08-18 19:18:23,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:18:23,692 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:23,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1442711131, now seen corresponding path program 1 times [2020-08-18 19:18:23,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:23,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058042659] [2020-08-18 19:18:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,043 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:24,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:18:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 19:18:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 19:18:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:18:24,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058042659] [2020-08-18 19:18:24,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:24,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:18:24,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056359847] [2020-08-18 19:18:24,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:18:24,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:24,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:18:24,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:18:24,148 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 7 states. [2020-08-18 19:18:24,432 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:25,559 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:26,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:26,212 INFO L93 Difference]: Finished difference Result 370 states and 466 transitions. [2020-08-18 19:18:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:18:26,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-18 19:18:26,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:26,218 INFO L225 Difference]: With dead ends: 370 [2020-08-18 19:18:26,219 INFO L226 Difference]: Without dead ends: 268 [2020-08-18 19:18:26,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 19:18:26,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-18 19:18:26,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 219. [2020-08-18 19:18:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-08-18 19:18:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2020-08-18 19:18:26,328 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 70 [2020-08-18 19:18:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:26,329 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2020-08-18 19:18:26,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:18:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2020-08-18 19:18:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 19:18:26,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:26,331 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, 1] [2020-08-18 19:18:26,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:18:26,331 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:26,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:26,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1583652076, now seen corresponding path program 1 times [2020-08-18 19:18:26,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:26,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883612399] [2020-08-18 19:18:26,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,611 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 19:18:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 19:18:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 19:18:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:18:26,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883612399] [2020-08-18 19:18:26,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:26,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:18:26,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489844838] [2020-08-18 19:18:26,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:18:26,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:26,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:18:26,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:18:26,756 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand 9 states. [2020-08-18 19:18:27,090 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:28,108 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:28,416 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:28,953 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:29,217 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:30,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:30,332 INFO L93 Difference]: Finished difference Result 653 states and 819 transitions. [2020-08-18 19:18:30,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 19:18:30,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 19:18:30,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:30,338 INFO L225 Difference]: With dead ends: 653 [2020-08-18 19:18:30,338 INFO L226 Difference]: Without dead ends: 462 [2020-08-18 19:18:30,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 19:18:30,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-18 19:18:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 386. [2020-08-18 19:18:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-18 19:18:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 442 transitions. [2020-08-18 19:18:30,427 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 442 transitions. Word has length 84 [2020-08-18 19:18:30,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:30,427 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 442 transitions. [2020-08-18 19:18:30,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:18:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 442 transitions. [2020-08-18 19:18:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 19:18:30,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:30,429 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, 1, 1, 1, 1, 1] [2020-08-18 19:18:30,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:18:30,430 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:30,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:30,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1422526648, now seen corresponding path program 1 times [2020-08-18 19:18:30,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:30,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522706754] [2020-08-18 19:18:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,713 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:30,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:18:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:18:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 19:18:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 19:18:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:30,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:18:30,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522706754] [2020-08-18 19:18:30,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:30,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:18:30,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158688365] [2020-08-18 19:18:30,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:18:30,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:30,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:18:30,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:18:30,862 INFO L87 Difference]: Start difference. First operand 386 states and 442 transitions. Second operand 10 states. [2020-08-18 19:18:31,225 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:32,396 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:33,492 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:33,749 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:34,020 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:34,492 INFO L93 Difference]: Finished difference Result 858 states and 1059 transitions. [2020-08-18 19:18:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 19:18:34,492 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 19:18:34,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:34,497 INFO L225 Difference]: With dead ends: 858 [2020-08-18 19:18:34,497 INFO L226 Difference]: Without dead ends: 500 [2020-08-18 19:18:34,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 19:18:34,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-18 19:18:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-18 19:18:34,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 19:18:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 439 transitions. [2020-08-18 19:18:34,580 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 439 transitions. Word has length 88 [2020-08-18 19:18:34,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:34,580 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 439 transitions. [2020-08-18 19:18:34,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:18:34,581 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 439 transitions. [2020-08-18 19:18:34,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 19:18:34,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:34,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:34,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:18:34,583 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:34,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:34,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1956386739, now seen corresponding path program 1 times [2020-08-18 19:18:34,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:34,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033816851] [2020-08-18 19:18:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,853 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:34,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:18:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:18:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:34,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:18:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:35,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 19:18:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:18:35,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033816851] [2020-08-18 19:18:35,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:35,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:18:35,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688614455] [2020-08-18 19:18:35,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:18:35,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:35,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:18:35,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:18:35,018 INFO L87 Difference]: Start difference. First operand 385 states and 439 transitions. Second operand 10 states. [2020-08-18 19:18:36,142 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:36,412 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 19:18:36,669 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:36,894 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:38,086 INFO L93 Difference]: Finished difference Result 865 states and 1088 transitions. [2020-08-18 19:18:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 19:18:38,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-08-18 19:18:38,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:38,090 INFO L225 Difference]: With dead ends: 865 [2020-08-18 19:18:38,091 INFO L226 Difference]: Without dead ends: 508 [2020-08-18 19:18:38,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:18:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-18 19:18:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 395. [2020-08-18 19:18:38,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-18 19:18:38,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 449 transitions. [2020-08-18 19:18:38,174 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 449 transitions. Word has length 104 [2020-08-18 19:18:38,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:38,175 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 449 transitions. [2020-08-18 19:18:38,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:18:38,175 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 449 transitions. [2020-08-18 19:18:38,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 19:18:38,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:38,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:38,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:18:38,177 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:38,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:38,178 INFO L82 PathProgramCache]: Analyzing trace with hash -28114037, now seen corresponding path program 1 times [2020-08-18 19:18:38,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:38,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837274014] [2020-08-18 19:18:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,429 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:38,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:18:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:18:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:18:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 19:18:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:18:38,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837274014] [2020-08-18 19:18:38,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:38,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 19:18:38,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725689585] [2020-08-18 19:18:38,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:18:38,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:38,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:18:38,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:18:38,610 INFO L87 Difference]: Start difference. First operand 395 states and 449 transitions. Second operand 12 states. [2020-08-18 19:18:39,230 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:39,469 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:39,690 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:40,391 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:40,632 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:40,869 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 19:18:42,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:42,374 INFO L93 Difference]: Finished difference Result 885 states and 1110 transitions. [2020-08-18 19:18:42,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:18:42,374 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-08-18 19:18:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:42,379 INFO L225 Difference]: With dead ends: 885 [2020-08-18 19:18:42,379 INFO L226 Difference]: Without dead ends: 518 [2020-08-18 19:18:42,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 19:18:42,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-18 19:18:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 403. [2020-08-18 19:18:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-08-18 19:18:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 457 transitions. [2020-08-18 19:18:42,472 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 457 transitions. Word has length 104 [2020-08-18 19:18:42,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:42,473 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 457 transitions. [2020-08-18 19:18:42,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:18:42,473 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 457 transitions. [2020-08-18 19:18:42,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 19:18:42,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:42,475 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:42,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:18:42,476 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:42,476 INFO L82 PathProgramCache]: Analyzing trace with hash -268654166, now seen corresponding path program 1 times [2020-08-18 19:18:42,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:42,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067888365] [2020-08-18 19:18:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,730 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:42,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 19:18:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 19:18:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:18:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 19:18:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 19:18:42,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067888365] [2020-08-18 19:18:42,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:18:42,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:18:42,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26488647] [2020-08-18 19:18:42,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:18:42,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:42,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:18:42,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:18:42,889 INFO L87 Difference]: Start difference. First operand 403 states and 457 transitions. Second operand 8 states. [2020-08-18 19:18:43,227 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:43,780 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:46,189 INFO L93 Difference]: Finished difference Result 1233 states and 1597 transitions. [2020-08-18 19:18:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 19:18:46,189 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-08-18 19:18:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:46,196 INFO L225 Difference]: With dead ends: 1233 [2020-08-18 19:18:46,196 INFO L226 Difference]: Without dead ends: 858 [2020-08-18 19:18:46,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 19:18:46,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-18 19:18:46,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 713. [2020-08-18 19:18:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-08-18 19:18:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 835 transitions. [2020-08-18 19:18:46,326 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 835 transitions. Word has length 104 [2020-08-18 19:18:46,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:46,327 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 835 transitions. [2020-08-18 19:18:46,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:18:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 835 transitions. [2020-08-18 19:18:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 19:18:46,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:46,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:46,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:18:46,330 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:46,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1852641244, now seen corresponding path program 1 times [2020-08-18 19:18:46,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:46,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341458250] [2020-08-18 19:18:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,623 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:46,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:18:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 19:18:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 19:18:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 19:18:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 19:18:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 19:18:47,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341458250] [2020-08-18 19:18:47,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:18:47,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 19:18:47,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512378990] [2020-08-18 19:18:47,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 19:18:47,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:47,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 19:18:47,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:18:47,003 INFO L87 Difference]: Start difference. First operand 713 states and 835 transitions. Second operand 18 states. [2020-08-18 19:18:47,411 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:47,756 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 19:18:48,033 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:48,286 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:49,045 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:50,123 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:50,459 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:50,745 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:51,051 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:51,387 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:51,686 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:52,264 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 19:18:52,845 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 19:18:55,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:18:55,074 INFO L93 Difference]: Finished difference Result 1515 states and 1873 transitions. [2020-08-18 19:18:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-18 19:18:55,075 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-08-18 19:18:55,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:18:55,081 INFO L225 Difference]: With dead ends: 1515 [2020-08-18 19:18:55,082 INFO L226 Difference]: Without dead ends: 830 [2020-08-18 19:18:55,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 19:18:55,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-18 19:18:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 694. [2020-08-18 19:18:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-08-18 19:18:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 803 transitions. [2020-08-18 19:18:55,244 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 803 transitions. Word has length 108 [2020-08-18 19:18:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:18:55,245 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 803 transitions. [2020-08-18 19:18:55,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 19:18:55,245 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 803 transitions. [2020-08-18 19:18:55,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-18 19:18:55,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:18:55,250 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:18:55,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:18:55,251 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:18:55,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:18:55,252 INFO L82 PathProgramCache]: Analyzing trace with hash 760447467, now seen corresponding path program 1 times [2020-08-18 19:18:55,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:18:55,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625981817] [2020-08-18 19:18:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:18:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,563 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 19:18:55,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:18:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:18:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 19:18:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:18:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:18:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 19:18:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 19:18:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:18:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 19:18:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 19:18:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 19:18:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 19:18:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 19:18:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:18:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 19:18:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 19:18:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 19:18:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-18 19:18:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:18:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 19:18:55,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625981817] [2020-08-18 19:18:55,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:18:55,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 19:18:55,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338186515] [2020-08-18 19:18:55,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 19:18:55,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:18:55,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 19:18:55,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 19:18:55,846 INFO L87 Difference]: Start difference. First operand 694 states and 803 transitions. Second operand 19 states. [2020-08-18 19:18:56,698 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:57,049 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 19:18:57,311 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:57,553 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 19:18:58,311 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 19:18:59,367 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:59,701 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:18:59,964 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:19:00,243 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:19:00,574 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:19:00,838 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:19:02,067 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:19:02,317 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:19:02,586 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:19:02,822 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 19:19:03,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:19:03,776 INFO L93 Difference]: Finished difference Result 1298 states and 1607 transitions. [2020-08-18 19:19:03,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 19:19:03,777 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 160 [2020-08-18 19:19:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:19:03,778 INFO L225 Difference]: With dead ends: 1298 [2020-08-18 19:19:03,778 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 19:19:03,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-18 19:19:03,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 19:19:03,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 19:19:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 19:19:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 19:19:03,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-18 19:19:03,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:19:03,785 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 19:19:03,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 19:19:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 19:19:03,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 19:19:03,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:19:03,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 19:19:06,476 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 326 DAG size of output: 274 [2020-08-18 19:19:06,700 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 204 [2020-08-18 19:19:06,889 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 201 [2020-08-18 19:19:07,015 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2020-08-18 19:19:07,352 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 201 [2020-08-18 19:19:09,365 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 278 [2020-08-18 19:19:09,824 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 260 [2020-08-18 19:19:10,304 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 260 [2020-08-18 19:19:11,825 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 270 [2020-08-18 19:19:12,092 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 18