/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=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:43:58,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:43:58,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:43:58,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:43:58,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:43:58,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:43:58,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:43:58,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:43:58,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:43:58,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:43:58,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:43:58,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:43:58,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:43:58,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:43:58,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:43:58,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:43:58,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:43:58,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:43:58,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:43:58,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:43:58,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:43:58,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:43:58,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:43:58,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:43:58,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:43:58,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:43:58,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:43:58,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:43:58,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:43:58,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:43:58,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:43:58,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:43:58,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:43:58,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:43:58,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:43:58,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:43:58,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:43:58,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:43:58,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:43:58,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:43:58,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:43:58,122 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 21:43:58,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:43:58,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:43:58,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:43:58,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:43:58,146 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:43:58,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:43:58,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:43:58,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:43:58,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:43:58,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:43:58,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:43:58,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:43:58,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:43:58,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:43:58,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:43:58,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:43:58,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:43:58,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:43:58,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:43:58,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:43:58,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:43:58,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:43:58,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:43:58,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:43:58,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:43:58,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:43:58,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:43:58,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:43:58,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:43:58,151 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:43:58,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:43:58,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:43:58,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:43:58,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:43:58,459 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:43:58,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2020-08-18 21:43:58,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd48d074a/9dc3f49141944126abf46c2a58fa5c57/FLAG147eb860a [2020-08-18 21:43:59,033 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:43:59,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product62.cil.c [2020-08-18 21:43:59,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd48d074a/9dc3f49141944126abf46c2a58fa5c57/FLAG147eb860a [2020-08-18 21:43:59,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd48d074a/9dc3f49141944126abf46c2a58fa5c57 [2020-08-18 21:43:59,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:43:59,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:43:59,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:43:59,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:43:59,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:43:59,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:43:59" (1/1) ... [2020-08-18 21:43:59,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87441be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:59, skipping insertion in model container [2020-08-18 21:43:59,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:43:59" (1/1) ... [2020-08-18 21:43:59,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:43:59,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:43:59,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:43:59,902 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:43:59,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:44:00,042 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:44:00,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:00 WrapperNode [2020-08-18 21:44:00,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:44:00,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:44:00,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:44:00,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:44:00,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:00" (1/1) ... [2020-08-18 21:44:00,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:00" (1/1) ... [2020-08-18 21:44:00,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:00" (1/1) ... [2020-08-18 21:44:00,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:00" (1/1) ... [2020-08-18 21:44:00,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:00" (1/1) ... [2020-08-18 21:44:00,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:00" (1/1) ... [2020-08-18 21:44:00,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:00" (1/1) ... [2020-08-18 21:44:00,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:44:00,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:44:00,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:44:00,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:44:00,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:44:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:44:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:44:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:44:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:44:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:44:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:44:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:44:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:44:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:44:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:44:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:44:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:44:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:44:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:44:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:44:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 21:44:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 21:44:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:44:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:44:00,268 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:44:00,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:44:00,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:44:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:44:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:44:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 21:44:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:44:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:44:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:44:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:44:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:44:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:44:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:44:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:44:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 21:44:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:44:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 21:44:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:44:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:44:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:44:00,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:44:00,273 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:44:00,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:44:00,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 21:44:00,273 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 21:44:00,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:44:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:44:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:44:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:44:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:44:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:44:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:44:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:44:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:44:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:44:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:44:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:44:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:44:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:44:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:44:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:44:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:44:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:44:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:44:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:44:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:44:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:44:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:44:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:44:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:44:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:44:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:44:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 21:44:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:44:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:44:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:44:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:44:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:44:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:44:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:44:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:44:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:44:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 21:44:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:44:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:44:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:44:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:44:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 21:44:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:44:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 21:44:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:44:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:44:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:44:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:44:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:44:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:44:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 21:44:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 21:44:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:44:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 21:44:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:44:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:44:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:44:01,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:44:01,501 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:44:01,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:44:01 BoogieIcfgContainer [2020-08-18 21:44:01,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:44:01,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:44:01,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:44:01,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:44:01,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:43:59" (1/3) ... [2020-08-18 21:44:01,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1bc9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:44:01, skipping insertion in model container [2020-08-18 21:44:01,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:44:00" (2/3) ... [2020-08-18 21:44:01,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1bc9be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:44:01, skipping insertion in model container [2020-08-18 21:44:01,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:44:01" (3/3) ... [2020-08-18 21:44:01,517 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product62.cil.c [2020-08-18 21:44:01,529 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:44:01,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:44:01,553 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:44:01,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:44:01,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:44:01,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:44:01,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:44:01,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:44:01,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:44:01,580 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:44:01,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:44:01,605 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-18 21:44:01,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 21:44:01,617 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:01,618 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 21:44:01,619 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:01,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:01,626 INFO L82 PathProgramCache]: Analyzing trace with hash -519940638, now seen corresponding path program 1 times [2020-08-18 21:44:01,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:01,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542509463] [2020-08-18 21:44:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:02,352 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:02,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:02,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:02,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:02,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:02,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:02,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:02,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:44:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:02,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 21:44:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:02,496 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 21:44:02,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542509463] [2020-08-18 21:44:02,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:44:02,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:44:02,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425868808] [2020-08-18 21:44:02,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:44:02,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:02,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:44:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:44:02,528 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2020-08-18 21:44:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:03,849 INFO L93 Difference]: Finished difference Result 354 states and 460 transitions. [2020-08-18 21:44:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:44:03,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 21:44:03,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:03,866 INFO L225 Difference]: With dead ends: 354 [2020-08-18 21:44:03,866 INFO L226 Difference]: Without dead ends: 196 [2020-08-18 21:44:03,871 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 21:44:03,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-18 21:44:03,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 159. [2020-08-18 21:44:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-18 21:44:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-18 21:44:03,998 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 51 [2020-08-18 21:44:03,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:03,998 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-18 21:44:03,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:44:03,999 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-18 21:44:04,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 21:44:04,009 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:04,009 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 21:44:04,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:44:04,010 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:04,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:04,010 INFO L82 PathProgramCache]: Analyzing trace with hash -183354494, now seen corresponding path program 1 times [2020-08-18 21:44:04,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:04,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662627652] [2020-08-18 21:44:04,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:04,380 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:04,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:04,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:04,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:04,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:04,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:04,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:44:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:04,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:44:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:04,441 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 21:44:04,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662627652] [2020-08-18 21:44:04,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:44:04,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:44:04,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107309943] [2020-08-18 21:44:04,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:44:04,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:04,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:44:04,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:44:04,446 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 5 states. [2020-08-18 21:44:04,922 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:44:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:06,015 INFO L93 Difference]: Finished difference Result 295 states and 367 transitions. [2020-08-18 21:44:06,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:44:06,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 21:44:06,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:06,019 INFO L225 Difference]: With dead ends: 295 [2020-08-18 21:44:06,019 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 21:44:06,021 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 21:44:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 21:44:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-18 21:44:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-18 21:44:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-18 21:44:06,087 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 52 [2020-08-18 21:44:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:06,088 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-18 21:44:06,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:44:06,088 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-18 21:44:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 21:44:06,092 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:06,093 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 21:44:06,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:44:06,093 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:06,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1707012514, now seen corresponding path program 1 times [2020-08-18 21:44:06,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:06,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088050983] [2020-08-18 21:44:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:06,445 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:06,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:06,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:06,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:06,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:06,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 21:44:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:06,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:44:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:06,552 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 21:44:06,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088050983] [2020-08-18 21:44:06,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:44:06,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:44:06,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074318328] [2020-08-18 21:44:06,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:44:06,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:06,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:44:06,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:44:06,555 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 9 states. [2020-08-18 21:44:06,973 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:07,264 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:07,512 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:07,759 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:09,314 INFO L93 Difference]: Finished difference Result 308 states and 386 transitions. [2020-08-18 21:44:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:44:09,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 21:44:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:09,318 INFO L225 Difference]: With dead ends: 308 [2020-08-18 21:44:09,318 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 21:44:09,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:44:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 21:44:09,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-18 21:44:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-18 21:44:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2020-08-18 21:44:09,357 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 57 [2020-08-18 21:44:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:09,358 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2020-08-18 21:44:09,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:44:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2020-08-18 21:44:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 21:44:09,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:09,360 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] [2020-08-18 21:44:09,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:44:09,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:09,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:09,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1819519357, now seen corresponding path program 1 times [2020-08-18 21:44:09,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:09,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858788595] [2020-08-18 21:44:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,627 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:09,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:44:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 21:44:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 21:44:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:09,734 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 21:44:09,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858788595] [2020-08-18 21:44:09,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:44:09,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:44:09,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704476353] [2020-08-18 21:44:09,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:44:09,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:09,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:44:09,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:44:09,737 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 7 states. [2020-08-18 21:44:10,059 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:11,288 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:44:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:12,253 INFO L93 Difference]: Finished difference Result 418 states and 526 transitions. [2020-08-18 21:44:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:44:12,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-08-18 21:44:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:12,257 INFO L225 Difference]: With dead ends: 418 [2020-08-18 21:44:12,258 INFO L226 Difference]: Without dead ends: 296 [2020-08-18 21:44:12,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 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 21:44:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-18 21:44:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 247. [2020-08-18 21:44:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-18 21:44:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 282 transitions. [2020-08-18 21:44:12,311 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 282 transitions. Word has length 75 [2020-08-18 21:44:12,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:12,312 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 282 transitions. [2020-08-18 21:44:12,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:44:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 282 transitions. [2020-08-18 21:44:12,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 21:44:12,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:12,313 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, 1] [2020-08-18 21:44:12,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:44:12,314 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:12,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:12,314 INFO L82 PathProgramCache]: Analyzing trace with hash 948942276, now seen corresponding path program 1 times [2020-08-18 21:44:12,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:12,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676120680] [2020-08-18 21:44:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,615 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:44:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:44:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:44:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 21:44:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:12,771 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 21:44:12,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676120680] [2020-08-18 21:44:12,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:44:12,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:44:12,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771761890] [2020-08-18 21:44:12,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:44:12,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:12,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:44:12,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:44:12,773 INFO L87 Difference]: Start difference. First operand 247 states and 282 transitions. Second operand 9 states. [2020-08-18 21:44:13,176 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:14,216 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:14,575 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:15,157 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:15,381 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:16,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:16,779 INFO L93 Difference]: Finished difference Result 737 states and 912 transitions. [2020-08-18 21:44:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 21:44:16,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-18 21:44:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:16,785 INFO L225 Difference]: With dead ends: 737 [2020-08-18 21:44:16,786 INFO L226 Difference]: Without dead ends: 518 [2020-08-18 21:44:16,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 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 21:44:16,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-18 21:44:16,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 442. [2020-08-18 21:44:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-18 21:44:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 504 transitions. [2020-08-18 21:44:16,882 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 504 transitions. Word has length 89 [2020-08-18 21:44:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:16,883 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 504 transitions. [2020-08-18 21:44:16,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:44:16,883 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 504 transitions. [2020-08-18 21:44:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 21:44:16,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:16,884 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, 1, 1, 1, 1, 1] [2020-08-18 21:44:16,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:44:16,885 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:16,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:16,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1944159016, now seen corresponding path program 1 times [2020-08-18 21:44:16,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:16,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734045205] [2020-08-18 21:44:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,178 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:17,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:44:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:44:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:44:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 21:44:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 21:44:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:17,337 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 21:44:17,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734045205] [2020-08-18 21:44:17,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:44:17,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:44:17,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577063806] [2020-08-18 21:44:17,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:44:17,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:17,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:44:17,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:44:17,340 INFO L87 Difference]: Start difference. First operand 442 states and 504 transitions. Second operand 10 states. [2020-08-18 21:44:17,859 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:19,095 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:20,292 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:20,530 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:20,802 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:21,274 INFO L93 Difference]: Finished difference Result 970 states and 1183 transitions. [2020-08-18 21:44:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 21:44:21,274 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-18 21:44:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:21,280 INFO L225 Difference]: With dead ends: 970 [2020-08-18 21:44:21,280 INFO L226 Difference]: Without dead ends: 556 [2020-08-18 21:44:21,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 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 21:44:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-08-18 21:44:21,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 441. [2020-08-18 21:44:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-08-18 21:44:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 501 transitions. [2020-08-18 21:44:21,403 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 501 transitions. Word has length 93 [2020-08-18 21:44:21,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:21,404 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 501 transitions. [2020-08-18 21:44:21,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:44:21,404 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 501 transitions. [2020-08-18 21:44:21,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 21:44:21,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:21,406 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, 1] [2020-08-18 21:44:21,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:44:21,406 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:21,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:21,407 INFO L82 PathProgramCache]: Analyzing trace with hash -412136482, now seen corresponding path program 1 times [2020-08-18 21:44:21,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:21,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695409729] [2020-08-18 21:44:21,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,688 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:44:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:44:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:44:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 21:44:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 21:44:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:21,897 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 21:44:21,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695409729] [2020-08-18 21:44:21,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:44:21,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:44:21,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093070629] [2020-08-18 21:44:21,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:44:21,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:21,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:44:21,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:44:21,900 INFO L87 Difference]: Start difference. First operand 441 states and 501 transitions. Second operand 10 states. [2020-08-18 21:44:23,287 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:23,541 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:44:23,785 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:44:24,012 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:44:25,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:25,431 INFO L93 Difference]: Finished difference Result 977 states and 1216 transitions. [2020-08-18 21:44:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:44:25,435 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-08-18 21:44:25,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:25,442 INFO L225 Difference]: With dead ends: 977 [2020-08-18 21:44:25,442 INFO L226 Difference]: Without dead ends: 564 [2020-08-18 21:44:25,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 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 21:44:25,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-08-18 21:44:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 451. [2020-08-18 21:44:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-08-18 21:44:25,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 511 transitions. [2020-08-18 21:44:25,553 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 511 transitions. Word has length 109 [2020-08-18 21:44:25,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:25,554 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 511 transitions. [2020-08-18 21:44:25,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:44:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 511 transitions. [2020-08-18 21:44:25,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 21:44:25,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:25,556 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, 1] [2020-08-18 21:44:25,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:44:25,557 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:25,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:25,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1527025564, now seen corresponding path program 1 times [2020-08-18 21:44:25,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:25,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357020836] [2020-08-18 21:44:25,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:25,876 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:25,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:25,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:25,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:25,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:25,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:25,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:25,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:44:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:25,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:44:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:25,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:25,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:25,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:26,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:26,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:44:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:26,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:26,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:26,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 21:44:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:26,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 21:44:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:26,055 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 21:44:26,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357020836] [2020-08-18 21:44:26,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:44:26,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:44:26,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191907982] [2020-08-18 21:44:26,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:44:26,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:26,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:44:26,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:44:26,057 INFO L87 Difference]: Start difference. First operand 451 states and 511 transitions. Second operand 12 states. [2020-08-18 21:44:26,583 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:44:26,830 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:44:27,067 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:44:27,782 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:44:28,036 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:44:28,271 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:44:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:29,906 INFO L93 Difference]: Finished difference Result 997 states and 1238 transitions. [2020-08-18 21:44:29,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:44:29,907 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-18 21:44:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:29,912 INFO L225 Difference]: With dead ends: 997 [2020-08-18 21:44:29,913 INFO L226 Difference]: Without dead ends: 574 [2020-08-18 21:44:29,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 21:44:29,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-08-18 21:44:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 459. [2020-08-18 21:44:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-08-18 21:44:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 519 transitions. [2020-08-18 21:44:30,005 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 519 transitions. Word has length 109 [2020-08-18 21:44:30,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:30,007 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 519 transitions. [2020-08-18 21:44:30,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:44:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 519 transitions. [2020-08-18 21:44:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-18 21:44:30,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:30,014 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, 1] [2020-08-18 21:44:30,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:44:30,014 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:30,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:30,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1998771717, now seen corresponding path program 1 times [2020-08-18 21:44:30,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:30,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809151047] [2020-08-18 21:44:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,312 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:44:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:44:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:44:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 21:44:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 21:44:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:30,582 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 21:44:30,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809151047] [2020-08-18 21:44:30,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:44:30,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:44:30,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008222790] [2020-08-18 21:44:30,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:44:30,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:30,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:44:30,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:44:30,585 INFO L87 Difference]: Start difference. First operand 459 states and 519 transitions. Second operand 8 states. [2020-08-18 21:44:31,420 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:31,995 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:34,744 INFO L93 Difference]: Finished difference Result 1365 states and 1751 transitions. [2020-08-18 21:44:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 21:44:34,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-08-18 21:44:34,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:34,753 INFO L225 Difference]: With dead ends: 1365 [2020-08-18 21:44:34,754 INFO L226 Difference]: Without dead ends: 934 [2020-08-18 21:44:34,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 21:44:34,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-08-18 21:44:34,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 789. [2020-08-18 21:44:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-18 21:44:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 921 transitions. [2020-08-18 21:44:34,888 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 921 transitions. Word has length 109 [2020-08-18 21:44:34,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:34,889 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 921 transitions. [2020-08-18 21:44:34,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:44:34,889 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 921 transitions. [2020-08-18 21:44:34,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-18 21:44:34,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:34,891 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, 1, 1, 1, 1, 1] [2020-08-18 21:44:34,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:44:34,892 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:34,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1262789055, now seen corresponding path program 1 times [2020-08-18 21:44:34,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:34,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254217882] [2020-08-18 21:44:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,192 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:35,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:44:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:44:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:44:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:44:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 21:44:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 21:44:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:35,584 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 21:44:35,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254217882] [2020-08-18 21:44:35,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:44:35,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 21:44:35,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764134316] [2020-08-18 21:44:35,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 21:44:35,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:35,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 21:44:35,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:44:35,586 INFO L87 Difference]: Start difference. First operand 789 states and 921 transitions. Second operand 18 states. [2020-08-18 21:44:36,035 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:36,355 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:36,604 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:36,844 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:37,557 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:38,656 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:38,980 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:39,250 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:39,527 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:39,874 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:40,184 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:40,725 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 21:44:41,285 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 21:44:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:44,237 INFO L93 Difference]: Finished difference Result 1665 states and 2044 transitions. [2020-08-18 21:44:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-18 21:44:44,240 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-08-18 21:44:44,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:44,246 INFO L225 Difference]: With dead ends: 1665 [2020-08-18 21:44:44,246 INFO L226 Difference]: Without dead ends: 904 [2020-08-18 21:44:44,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 21:44:44,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-08-18 21:44:44,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 768. [2020-08-18 21:44:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-08-18 21:44:44,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 886 transitions. [2020-08-18 21:44:44,418 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 886 transitions. Word has length 113 [2020-08-18 21:44:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:44,419 INFO L479 AbstractCegarLoop]: Abstraction has 768 states and 886 transitions. [2020-08-18 21:44:44,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 21:44:44,419 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 886 transitions. [2020-08-18 21:44:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-08-18 21:44:44,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:44,425 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:44:44,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:44:44,426 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:44,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1271659967, now seen corresponding path program 1 times [2020-08-18 21:44:44,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:44,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633314269] [2020-08-18 21:44:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,742 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:44,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:44:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 21:44:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:44:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 21:44:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-18 21:44:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:44:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:44,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 21:44:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:45,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:45,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:45,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:44:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:45,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:45,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:44:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:45,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:45,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-18 21:44:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:45,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-18 21:44:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-18 21:44:45,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633314269] [2020-08-18 21:44:45,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:44:45,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 21:44:45,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486888161] [2020-08-18 21:44:45,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 21:44:45,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:45,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 21:44:45,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:44:45,224 INFO L87 Difference]: Start difference. First operand 768 states and 886 transitions. Second operand 19 states. [2020-08-18 21:44:45,790 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:46,107 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:46,374 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:46,614 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:47,311 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:48,408 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:48,771 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:49,059 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:49,336 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:49,675 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:49,961 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:51,273 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:51,530 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:51,816 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:52,074 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:53,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:53,410 INFO L93 Difference]: Finished difference Result 1426 states and 1761 transitions. [2020-08-18 21:44:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 21:44:53,411 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 183 [2020-08-18 21:44:53,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:53,412 INFO L225 Difference]: With dead ends: 1426 [2020-08-18 21:44:53,412 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 21:44:53,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2020-08-18 21:44:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 21:44:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 21:44:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 21:44:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 21:44:53,423 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2020-08-18 21:44:53,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:53,423 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 21:44:53,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 21:44:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 21:44:53,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 21:44:53,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:44:53,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 21:44:55,003 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 300 DAG size of output: 256 [2020-08-18 21:44:56,003 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 256