/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_spec1_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:41:39,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:41:39,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:41:39,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:41:39,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:41:39,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:41:39,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:41:39,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:41:39,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:41:39,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:41:39,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:41:39,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:41:39,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:41:39,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:41:39,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:41:39,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:41:39,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:41:39,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:41:39,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:41:39,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:41:39,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:41:39,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:41:39,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:41:39,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:41:39,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:41:39,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:41:39,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:41:39,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:41:39,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:41:39,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:41:39,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:41:39,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:41:39,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:41:39,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:41:39,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:41:39,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:41:39,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:41:39,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:41:39,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:41:39,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:41:39,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:41:39,236 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 21:41:39,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:41:39,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:41:39,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:41:39,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:41:39,275 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:41:39,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:41:39,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:41:39,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:41:39,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:41:39,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:41:39,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:41:39,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:41:39,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:41:39,278 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:41:39,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:41:39,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:41:39,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:41:39,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:41:39,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:41:39,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:41:39,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:41:39,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:41:39,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:41:39,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:41:39,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:41:39,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:41:39,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:41:39,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:41:39,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:41:39,281 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 21:41:39,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:41:39,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:41:39,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:41:39,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:41:39,593 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:41:39,594 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-18 21:41:39,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45d48847e/7922bb7c99e3489695f994415b46f644/FLAG1c490fc3e [2020-08-18 21:41:40,170 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:41:40,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-18 21:41:40,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45d48847e/7922bb7c99e3489695f994415b46f644/FLAG1c490fc3e [2020-08-18 21:41:40,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45d48847e/7922bb7c99e3489695f994415b46f644 [2020-08-18 21:41:40,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:41:40,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:41:40,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:41:40,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:41:40,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:41:40,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:41:40" (1/1) ... [2020-08-18 21:41:40,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:41:40, skipping insertion in model container [2020-08-18 21:41:40,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:41:40" (1/1) ... [2020-08-18 21:41:40,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:41:40,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:41:40,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:41:41,059 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:41:41,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:41:41,245 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:41:41,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:41:41 WrapperNode [2020-08-18 21:41:41,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:41:41,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:41:41,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:41:41,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:41:41,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:41:41" (1/1) ... [2020-08-18 21:41:41,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:41:41" (1/1) ... [2020-08-18 21:41:41,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:41:41" (1/1) ... [2020-08-18 21:41:41,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:41:41" (1/1) ... [2020-08-18 21:41:41,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:41:41" (1/1) ... [2020-08-18 21:41:41,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:41:41" (1/1) ... [2020-08-18 21:41:41,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:41:41" (1/1) ... [2020-08-18 21:41:41,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:41:41,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:41:41,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:41:41,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:41:41,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:41:41" (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 21:41:41,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:41:41,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:41:41,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:41:41,438 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:41:41,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:41:41,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:41:41,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 21:41:41,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:41:41,440 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 21:41:41,440 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:41:41,441 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:41:41,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:41:41,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:41:41,441 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:41:41,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:41:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 21:41:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 21:41:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:41:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:41:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:41:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:41:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:41:41,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:41:41,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:41:41,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:41:41,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:41:41,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:41:41,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:41:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:41:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:41:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:41:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:41:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:41:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:41:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:41:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:41:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:41:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:41:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:41:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:41:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 21:41:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 21:41:41,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:41:41,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:41:41,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:41:41,449 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:41:41,451 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:41:41,451 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:41:41,451 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:41:41,451 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:41:41,451 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 21:41:41,452 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:41:41,452 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:41:41,452 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:41:41,452 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:41:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:41:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 21:41:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 21:41:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:41:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:41:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:41:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:41:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 21:41:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 21:41:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:41:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 21:41:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:41:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:41:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:41:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:41:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:41:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:41:41,457 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:41:41,457 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:41:41,458 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:41:41,458 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:41:41,458 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:41:41,458 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:41:41,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:41:41,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:41:41,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:41:41,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:41:41,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:41:41,459 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:41:41,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:41:41,459 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:41:41,460 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:41:41,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:41:41,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:41:41,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:41:41,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:41:41,460 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:41:41,460 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:41:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:41:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:41:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:41:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:41:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:41:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:41:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:41:42,560 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:41:42,561 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:41:42,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:41:42 BoogieIcfgContainer [2020-08-18 21:41:42,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:41:42,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:41:42,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:41:42,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:41:42,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:41:40" (1/3) ... [2020-08-18 21:41:42,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f84677e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:41:42, skipping insertion in model container [2020-08-18 21:41:42,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:41:41" (2/3) ... [2020-08-18 21:41:42,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f84677e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:41:42, skipping insertion in model container [2020-08-18 21:41:42,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:41:42" (3/3) ... [2020-08-18 21:41:42,576 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2020-08-18 21:41:42,587 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:41:42,596 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:41:42,609 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:41:42,630 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:41:42,630 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:41:42,631 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:41:42,631 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:41:42,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:41:42,632 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:41:42,632 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:41:42,632 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:41:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-18 21:41:42,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 21:41:42,666 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:42,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:41:42,668 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:42,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:42,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1419538001, now seen corresponding path program 1 times [2020-08-18 21:41:42,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:42,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121559867] [2020-08-18 21:41:42,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:43,302 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:43,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:43,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:43,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:43,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:43,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:41:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:43,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:41:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:43,475 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 21:41:43,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121559867] [2020-08-18 21:41:43,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:41:43,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 21:41:43,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44522324] [2020-08-18 21:41:43,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 21:41:43,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:43,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 21:41:43,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:41:43,505 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2020-08-18 21:41:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:44,949 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2020-08-18 21:41:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:41:44,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 21:41:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:44,969 INFO L225 Difference]: With dead ends: 354 [2020-08-18 21:41:44,969 INFO L226 Difference]: Without dead ends: 191 [2020-08-18 21:41:44,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:41:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-18 21:41:45,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 154. [2020-08-18 21:41:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-18 21:41:45,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2020-08-18 21:41:45,134 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 46 [2020-08-18 21:41:45,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:45,135 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2020-08-18 21:41:45,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 21:41:45,136 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2020-08-18 21:41:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 21:41:45,146 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:45,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:41:45,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:41:45,147 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:45,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:45,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1353902391, now seen corresponding path program 1 times [2020-08-18 21:41:45,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:45,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84817657] [2020-08-18 21:41:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:45,530 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:45,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:45,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:45,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:45,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:45,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:45,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:41:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:45,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 21:41:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:45,598 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 21:41:45,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84817657] [2020-08-18 21:41:45,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:41:45,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:41:45,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779637481] [2020-08-18 21:41:45,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:41:45,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:45,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:41:45,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:41:45,602 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 4 states. [2020-08-18 21:41:46,004 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:47,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:47,041 INFO L93 Difference]: Finished difference Result 283 states and 348 transitions. [2020-08-18 21:41:47,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:41:47,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 21:41:47,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:47,046 INFO L225 Difference]: With dead ends: 283 [2020-08-18 21:41:47,046 INFO L226 Difference]: Without dead ends: 175 [2020-08-18 21:41:47,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:41:47,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-18 21:41:47,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-18 21:41:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-18 21:41:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2020-08-18 21:41:47,088 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 47 [2020-08-18 21:41:47,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:47,089 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2020-08-18 21:41:47,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:41:47,089 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2020-08-18 21:41:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 21:41:47,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:47,091 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 21:41:47,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:41:47,092 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:47,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:47,092 INFO L82 PathProgramCache]: Analyzing trace with hash -480372053, now seen corresponding path program 1 times [2020-08-18 21:41:47,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:47,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220209511] [2020-08-18 21:41:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:47,397 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:47,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:47,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:47,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:41:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:47,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:41:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:47,472 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 21:41:47,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220209511] [2020-08-18 21:41:47,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:41:47,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:41:47,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119908525] [2020-08-18 21:41:47,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:41:47,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:47,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:41:47,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:41:47,475 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand 8 states. [2020-08-18 21:41:47,872 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:48,159 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:48,396 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:48,629 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:50,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:50,027 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2020-08-18 21:41:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:41:50,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 21:41:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:50,031 INFO L225 Difference]: With dead ends: 296 [2020-08-18 21:41:50,031 INFO L226 Difference]: Without dead ends: 175 [2020-08-18 21:41:50,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:41:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-18 21:41:50,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-18 21:41:50,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-18 21:41:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2020-08-18 21:41:50,073 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 52 [2020-08-18 21:41:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:50,073 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2020-08-18 21:41:50,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:41:50,073 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2020-08-18 21:41:50,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 21:41:50,075 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:50,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:41:50,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:41:50,076 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:50,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:50,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1922469070, now seen corresponding path program 1 times [2020-08-18 21:41:50,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:50,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973146105] [2020-08-18 21:41:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,328 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:41:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 21:41:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 21:41:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:50,425 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 21:41:50,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973146105] [2020-08-18 21:41:50,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:41:50,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:41:50,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111267630] [2020-08-18 21:41:50,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:41:50,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:50,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:41:50,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:41:50,428 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 6 states. [2020-08-18 21:41:50,759 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:51,961 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:52,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:52,851 INFO L93 Difference]: Finished difference Result 404 states and 500 transitions. [2020-08-18 21:41:52,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:41:52,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-18 21:41:52,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:52,855 INFO L225 Difference]: With dead ends: 404 [2020-08-18 21:41:52,856 INFO L226 Difference]: Without dead ends: 283 [2020-08-18 21:41:52,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:41:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-18 21:41:52,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 240. [2020-08-18 21:41:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-18 21:41:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2020-08-18 21:41:52,918 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 70 [2020-08-18 21:41:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:52,918 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2020-08-18 21:41:52,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:41:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2020-08-18 21:41:52,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 21:41:52,920 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:52,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:41:52,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:41:52,921 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:52,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:52,921 INFO L82 PathProgramCache]: Analyzing trace with hash 371744810, now seen corresponding path program 1 times [2020-08-18 21:41:52,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:52,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902479471] [2020-08-18 21:41:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,212 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:53,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:41:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:41:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 21:41:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 21:41:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:53,307 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 21:41:53,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902479471] [2020-08-18 21:41:53,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:41:53,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:41:53,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723963669] [2020-08-18 21:41:53,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:41:53,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:53,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:41:53,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:41:53,310 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 8 states. [2020-08-18 21:41:53,662 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:54,686 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:55,068 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:55,666 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:55,906 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:41:56,179 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:41:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:41:57,406 INFO L93 Difference]: Finished difference Result 718 states and 872 transitions. [2020-08-18 21:41:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:41:57,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-18 21:41:57,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:41:57,414 INFO L225 Difference]: With dead ends: 718 [2020-08-18 21:41:57,414 INFO L226 Difference]: Without dead ends: 502 [2020-08-18 21:41:57,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:41:57,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-18 21:41:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 435. [2020-08-18 21:41:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-18 21:41:57,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 494 transitions. [2020-08-18 21:41:57,525 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 494 transitions. Word has length 84 [2020-08-18 21:41:57,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:41:57,525 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 494 transitions. [2020-08-18 21:41:57,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:41:57,526 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 494 transitions. [2020-08-18 21:41:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 21:41:57,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:41:57,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:41:57,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:41:57,528 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:41:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:41:57,528 INFO L82 PathProgramCache]: Analyzing trace with hash 861472934, now seen corresponding path program 1 times [2020-08-18 21:41:57,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:41:57,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803240860] [2020-08-18 21:41:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:41:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,838 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:41:57,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:41:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:41:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:41:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:41:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:41:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:41:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:41:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:41:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:41:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:41:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 21:41:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 21:41:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:41:57,941 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 21:41:57,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803240860] [2020-08-18 21:41:57,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:41:57,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:41:57,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964358026] [2020-08-18 21:41:57,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:41:57,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:41:57,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:41:57,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:41:57,944 INFO L87 Difference]: Start difference. First operand 435 states and 494 transitions. Second operand 9 states. [2020-08-18 21:41:58,363 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:59,506 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:41:59,784 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:42:00,802 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:01,045 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:01,287 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:01,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:42:01,629 INFO L93 Difference]: Finished difference Result 544 states and 674 transitions. [2020-08-18 21:42:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:42:01,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-18 21:42:01,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:42:01,634 INFO L225 Difference]: With dead ends: 544 [2020-08-18 21:42:01,634 INFO L226 Difference]: Without dead ends: 541 [2020-08-18 21:42:01,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:42:01,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-18 21:42:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 435. [2020-08-18 21:42:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-18 21:42:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 493 transitions. [2020-08-18 21:42:01,714 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 493 transitions. Word has length 88 [2020-08-18 21:42:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:42:01,715 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 493 transitions. [2020-08-18 21:42:01,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:42:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 493 transitions. [2020-08-18 21:42:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 21:42:01,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:42:01,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:42:01,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:42:01,717 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:42:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:42:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1149093276, now seen corresponding path program 1 times [2020-08-18 21:42:01,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:42:01,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394666802] [2020-08-18 21:42:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:42:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:01,963 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:42:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:42:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:01,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:42:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:01,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:42:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:01,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:42:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:42:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:42:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:42:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 21:42:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 21:42:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:02,129 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 21:42:02,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394666802] [2020-08-18 21:42:02,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:42:02,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:42:02,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597848667] [2020-08-18 21:42:02,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:42:02,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:42:02,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:42:02,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:42:02,132 INFO L87 Difference]: Start difference. First operand 435 states and 493 transitions. Second operand 9 states. [2020-08-18 21:42:03,514 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:03,744 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:42:03,981 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:42:04,211 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:42:05,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:42:05,549 INFO L93 Difference]: Finished difference Result 960 states and 1180 transitions. [2020-08-18 21:42:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:42:05,550 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-08-18 21:42:05,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:42:05,555 INFO L225 Difference]: With dead ends: 960 [2020-08-18 21:42:05,555 INFO L226 Difference]: Without dead ends: 549 [2020-08-18 21:42:05,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:42:05,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-08-18 21:42:05,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 445. [2020-08-18 21:42:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-08-18 21:42:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 503 transitions. [2020-08-18 21:42:05,630 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 503 transitions. Word has length 104 [2020-08-18 21:42:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:42:05,631 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 503 transitions. [2020-08-18 21:42:05,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:42:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 503 transitions. [2020-08-18 21:42:05,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 21:42:05,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:42:05,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:42:05,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:42:05,634 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:42:05,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:42:05,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1502181658, now seen corresponding path program 1 times [2020-08-18 21:42:05,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:42:05,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437935228] [2020-08-18 21:42:05,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:42:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:05,893 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:42:05,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:42:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:42:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:05,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:42:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:05,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:05,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:42:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:05,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:42:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:05,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:42:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:05,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:05,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:06,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:06,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:42:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:06,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:06,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:06,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:06,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 21:42:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:06,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 21:42:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:06,086 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 21:42:06,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437935228] [2020-08-18 21:42:06,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:42:06,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 21:42:06,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330056081] [2020-08-18 21:42:06,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:42:06,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:42:06,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:42:06,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:42:06,093 INFO L87 Difference]: Start difference. First operand 445 states and 503 transitions. Second operand 11 states. [2020-08-18 21:42:06,650 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:42:06,880 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:42:07,092 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:42:07,759 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:42:08,028 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:42:08,278 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:42:09,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:42:09,738 INFO L93 Difference]: Finished difference Result 980 states and 1202 transitions. [2020-08-18 21:42:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:42:09,739 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-08-18 21:42:09,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:42:09,748 INFO L225 Difference]: With dead ends: 980 [2020-08-18 21:42:09,749 INFO L226 Difference]: Without dead ends: 559 [2020-08-18 21:42:09,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:42:09,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-08-18 21:42:09,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 453. [2020-08-18 21:42:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-18 21:42:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 511 transitions. [2020-08-18 21:42:09,859 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 511 transitions. Word has length 104 [2020-08-18 21:42:09,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:42:09,860 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 511 transitions. [2020-08-18 21:42:09,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:42:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 511 transitions. [2020-08-18 21:42:09,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 21:42:09,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:42:09,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:42:09,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:42:09,866 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:42:09,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:42:09,867 INFO L82 PathProgramCache]: Analyzing trace with hash -368991065, now seen corresponding path program 1 times [2020-08-18 21:42:09,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:42:09,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026494207] [2020-08-18 21:42:09,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:42:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,155 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:42:10,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:42:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:42:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:42:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:42:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 21:42:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:42:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:42:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 21:42:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 21:42:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:10,345 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 21:42:10,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026494207] [2020-08-18 21:42:10,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:42:10,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:42:10,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622586531] [2020-08-18 21:42:10,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:42:10,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:42:10,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:42:10,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:42:10,348 INFO L87 Difference]: Start difference. First operand 453 states and 511 transitions. Second operand 7 states. [2020-08-18 21:42:10,701 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:42:11,223 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:42:13,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:42:13,965 INFO L93 Difference]: Finished difference Result 1342 states and 1702 transitions. [2020-08-18 21:42:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:42:13,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-08-18 21:42:13,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:42:13,973 INFO L225 Difference]: With dead ends: 1342 [2020-08-18 21:42:13,973 INFO L226 Difference]: Without dead ends: 913 [2020-08-18 21:42:13,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:42:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-18 21:42:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 793. [2020-08-18 21:42:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-18 21:42:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 929 transitions. [2020-08-18 21:42:14,150 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 929 transitions. Word has length 104 [2020-08-18 21:42:14,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:42:14,150 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 929 transitions. [2020-08-18 21:42:14,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:42:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 929 transitions. [2020-08-18 21:42:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 21:42:14,153 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:42:14,153 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:42:14,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:42:14,153 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:42:14,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:42:14,154 INFO L82 PathProgramCache]: Analyzing trace with hash 38573473, now seen corresponding path program 1 times [2020-08-18 21:42:14,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:42:14,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779592490] [2020-08-18 21:42:14,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:42:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,530 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:42:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:42:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:42:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:42:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:42:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:42:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:42:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:42:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:42:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 21:42:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 21:42:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:14,998 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 21:42:14,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779592490] [2020-08-18 21:42:14,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:42:14,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 21:42:14,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127463015] [2020-08-18 21:42:14,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 21:42:15,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:42:15,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 21:42:15,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 21:42:15,001 INFO L87 Difference]: Start difference. First operand 793 states and 929 transitions. Second operand 17 states. [2020-08-18 21:42:15,708 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:42:16,034 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:16,284 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:16,534 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:17,201 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:42:18,305 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:18,646 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:18,931 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:19,221 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:19,555 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:19,844 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:20,353 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 21:42:20,902 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 21:42:23,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:42:23,564 INFO L93 Difference]: Finished difference Result 1649 states and 2014 transitions. [2020-08-18 21:42:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 21:42:23,565 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 108 [2020-08-18 21:42:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:42:23,571 INFO L225 Difference]: With dead ends: 1649 [2020-08-18 21:42:23,572 INFO L226 Difference]: Without dead ends: 880 [2020-08-18 21:42:23,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 21:42:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-18 21:42:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 763. [2020-08-18 21:42:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-18 21:42:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 880 transitions. [2020-08-18 21:42:23,735 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 880 transitions. Word has length 108 [2020-08-18 21:42:23,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:42:23,736 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 880 transitions. [2020-08-18 21:42:23,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 21:42:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 880 transitions. [2020-08-18 21:42:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-18 21:42:23,741 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:42:23,743 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] [2020-08-18 21:42:23,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:42:23,744 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:42:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:42:23,744 INFO L82 PathProgramCache]: Analyzing trace with hash 118260142, now seen corresponding path program 1 times [2020-08-18 21:42:23,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:42:23,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092841324] [2020-08-18 21:42:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:42:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,108 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:42:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:42:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:42:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:42:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:42:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:42:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:42:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:42:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:42:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 21:42:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 21:42:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 21:42:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 21:42:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:42:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:42:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:42:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:42:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-18 21:42:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 21:42:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:42:24,411 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 21:42:24,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092841324] [2020-08-18 21:42:24,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:42:24,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 21:42:24,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908946277] [2020-08-18 21:42:24,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 21:42:24,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:42:24,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 21:42:24,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:42:24,414 INFO L87 Difference]: Start difference. First operand 763 states and 880 transitions. Second operand 18 states. [2020-08-18 21:42:25,026 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:42:25,377 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:25,650 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:25,910 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:42:26,605 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:42:27,693 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:28,003 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:28,261 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:28,510 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:28,833 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:29,102 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:30,302 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:30,542 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:30,804 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:31,038 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:42:32,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:42:32,414 INFO L93 Difference]: Finished difference Result 1402 states and 1720 transitions. [2020-08-18 21:42:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 21:42:32,420 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-08-18 21:42:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:42:32,421 INFO L225 Difference]: With dead ends: 1402 [2020-08-18 21:42:32,421 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 21:42:32,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-08-18 21:42:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 21:42:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 21:42:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 21:42:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 21:42:32,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-08-18 21:42:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:42:32,427 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 21:42:32,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 21:42:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 21:42:32,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 21:42:32,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:42:32,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 21:42:33,184 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-18 21:42:33,309 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-18 21:42:33,461 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-18 21:42:33,667 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-18 21:42:33,806 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-18 21:42:35,148 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-18 21:42:35,890 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-18 21:42:36,446 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 259 [2020-08-18 21:42:38,631 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257