/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:22:56,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:22:56,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:22:56,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:22:56,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:22:56,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:22:56,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:22:56,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:22:56,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:22:56,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:22:56,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:22:56,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:22:56,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:22:56,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:22:56,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:22:56,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:22:56,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:22:56,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:22:56,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:22:56,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:22:56,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:22:56,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:22:56,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:22:56,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:22:56,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:22:56,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:22:56,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:22:56,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:22:56,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:22:56,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:22:56,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:22:56,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:22:56,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:22:56,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:22:56,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:22:56,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:22:56,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:22:56,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:22:56,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:22:56,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:22:56,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:22:56,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 20:22:56,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:22:56,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:22:56,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:22:56,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:22:56,390 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:22:56,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:22:56,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:22:56,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:22:56,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:22:56,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:22:56,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:22:56,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:22:56,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:22:56,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:22:56,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:22:56,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:22:56,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:22:56,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:22:56,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:22:56,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:22:56,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:22:56,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:22:56,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:22:56,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:22:56,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:22:56,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:22:56,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:22:56,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:22:56,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:22:56,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:22:56,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:22:56,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:22:56,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:22:56,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:22:56,767 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:22:56,767 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-21 20:22:56,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5bc7700a/f83472a6fa72490db730f0e081f5607e/FLAG0c242ee6f [2020-08-21 20:22:57,375 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:22:57,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-21 20:22:57,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5bc7700a/f83472a6fa72490db730f0e081f5607e/FLAG0c242ee6f [2020-08-21 20:22:57,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5bc7700a/f83472a6fa72490db730f0e081f5607e [2020-08-21 20:22:57,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:22:57,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:22:57,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:22:57,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:22:57,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:22:57,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:22:57" (1/1) ... [2020-08-21 20:22:57,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16606ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:57, skipping insertion in model container [2020-08-21 20:22:57,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:22:57" (1/1) ... [2020-08-21 20:22:57,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:22:57,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:22:58,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:22:58,152 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:22:58,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:22:58,338 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:22:58,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:58 WrapperNode [2020-08-21 20:22:58,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:22:58,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:22:58,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:22:58,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:22:58,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:58" (1/1) ... [2020-08-21 20:22:58,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:58" (1/1) ... [2020-08-21 20:22:58,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:58" (1/1) ... [2020-08-21 20:22:58,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:58" (1/1) ... [2020-08-21 20:22:58,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:58" (1/1) ... [2020-08-21 20:22:58,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:58" (1/1) ... [2020-08-21 20:22:58,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:58" (1/1) ... [2020-08-21 20:22:58,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:22:58,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:22:58,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:22:58,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:22:58,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:22:58,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:22:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:22:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 20:22:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 20:22:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 20:22:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 20:22:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 20:22:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 20:22:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 20:22:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 20:22:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 20:22:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 20:22:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-21 20:22:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-21 20:22:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-21 20:22:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-21 20:22:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-21 20:22:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-21 20:22:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 20:22:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-21 20:22:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-21 20:22:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 20:22:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 20:22:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 20:22:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 20:22:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 20:22:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 20:22:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 20:22:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 20:22:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 20:22:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 20:22:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 20:22:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 20:22:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 20:22:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:22:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 20:22:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 20:22:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 20:22:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 20:22:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 20:22:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 20:22:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 20:22:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 20:22:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 20:22:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 20:22:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 20:22:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 20:22:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 20:22:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 20:22:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:22:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:22:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 20:22:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 20:22:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 20:22:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 20:22:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 20:22:58,506 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 20:22:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 20:22:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 20:22:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 20:22:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:22:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 20:22:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 20:22:58,507 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 20:22:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 20:22:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 20:22:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 20:22:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 20:22:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 20:22:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 20:22:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-21 20:22:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 20:22:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-21 20:22:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-21 20:22:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 20:22:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-21 20:22:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-21 20:22:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 20:22:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-21 20:22:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-21 20:22:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-21 20:22:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 20:22:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 20:22:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 20:22:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 20:22:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 20:22:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 20:22:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 20:22:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 20:22:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 20:22:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:22:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 20:22:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 20:22:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:22:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:22:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 20:22:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:22:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:22:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:22:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:22:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 20:22:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:22:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 20:22:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 20:22:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:22:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 20:22:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 20:22:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 20:22:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 20:22:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:22:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:22:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:22:59,724 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:22:59,724 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 20:22:59,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:22:59 BoogieIcfgContainer [2020-08-21 20:22:59,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:22:59,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:22:59,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:22:59,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:22:59,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:22:57" (1/3) ... [2020-08-21 20:22:59,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa31e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:22:59, skipping insertion in model container [2020-08-21 20:22:59,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:22:58" (2/3) ... [2020-08-21 20:22:59,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa31e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:22:59, skipping insertion in model container [2020-08-21 20:22:59,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:22:59" (3/3) ... [2020-08-21 20:22:59,739 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_productSimulator.cil.c [2020-08-21 20:22:59,750 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:22:59,759 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:22:59,773 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:22:59,795 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:22:59,795 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:22:59,796 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:22:59,796 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:22:59,796 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:22:59,796 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:22:59,797 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:22:59,797 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:22:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states. [2020-08-21 20:22:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 20:22:59,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:22:59,837 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:22:59,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:22:59,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:22:59,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2065144369, now seen corresponding path program 1 times [2020-08-21 20:22:59,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:22:59,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103948090] [2020-08-21 20:22:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,752 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 20:23:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:23:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 20:23:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 20:23:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 20:23:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:23:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 20:23:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 20:23:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 20:23:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 20:23:00,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103948090] [2020-08-21 20:23:00,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:00,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 20:23:00,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665067994] [2020-08-21 20:23:00,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:23:00,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:00,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:23:00,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:23:00,965 INFO L87 Difference]: Start difference. First operand 247 states. Second operand 6 states. [2020-08-21 20:23:03,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:03,568 INFO L93 Difference]: Finished difference Result 442 states and 585 transitions. [2020-08-21 20:23:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 20:23:03,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-08-21 20:23:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:03,588 INFO L225 Difference]: With dead ends: 442 [2020-08-21 20:23:03,589 INFO L226 Difference]: Without dead ends: 256 [2020-08-21 20:23:03,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:23:03,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-21 20:23:03,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 204. [2020-08-21 20:23:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-21 20:23:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 251 transitions. [2020-08-21 20:23:03,703 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 251 transitions. Word has length 83 [2020-08-21 20:23:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:03,704 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 251 transitions. [2020-08-21 20:23:03,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:23:03,704 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 251 transitions. [2020-08-21 20:23:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 20:23:03,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:03,710 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:03,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:23:03,710 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:03,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:03,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1458323181, now seen corresponding path program 1 times [2020-08-21 20:23:03,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:03,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280671047] [2020-08-21 20:23:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,081 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 20:23:04,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:23:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 20:23:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 20:23:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 20:23:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:23:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 20:23:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 20:23:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 20:23:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:04,222 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 20:23:04,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280671047] [2020-08-21 20:23:04,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:04,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:23:04,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436924483] [2020-08-21 20:23:04,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:23:04,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:04,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:23:04,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:23:04,226 INFO L87 Difference]: Start difference. First operand 204 states and 251 transitions. Second operand 7 states. [2020-08-21 20:23:05,073 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 20:23:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:06,850 INFO L93 Difference]: Finished difference Result 375 states and 480 transitions. [2020-08-21 20:23:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 20:23:06,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-21 20:23:06,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:06,855 INFO L225 Difference]: With dead ends: 375 [2020-08-21 20:23:06,855 INFO L226 Difference]: Without dead ends: 246 [2020-08-21 20:23:06,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:23:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-21 20:23:06,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 195. [2020-08-21 20:23:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-21 20:23:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 239 transitions. [2020-08-21 20:23:06,901 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 239 transitions. Word has length 84 [2020-08-21 20:23:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:06,902 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 239 transitions. [2020-08-21 20:23:06,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:23:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 239 transitions. [2020-08-21 20:23:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 20:23:06,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:06,906 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:06,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:23:06,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:06,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:06,907 INFO L82 PathProgramCache]: Analyzing trace with hash 481269972, now seen corresponding path program 1 times [2020-08-21 20:23:06,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:06,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782485075] [2020-08-21 20:23:06,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,301 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 20:23:07,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:23:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 20:23:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 20:23:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 20:23:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:23:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 20:23:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 20:23:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 20:23:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 20:23:07,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782485075] [2020-08-21 20:23:07,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:07,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 20:23:07,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918461153] [2020-08-21 20:23:07,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 20:23:07,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:07,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 20:23:07,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-21 20:23:07,610 INFO L87 Difference]: Start difference. First operand 195 states and 239 transitions. Second operand 13 states. [2020-08-21 20:23:08,226 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 20:23:08,919 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2020-08-21 20:23:09,751 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-08-21 20:23:10,981 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 20:23:11,378 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-21 20:23:15,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:15,239 INFO L93 Difference]: Finished difference Result 633 states and 818 transitions. [2020-08-21 20:23:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 20:23:15,240 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-08-21 20:23:15,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:15,250 INFO L225 Difference]: With dead ends: 633 [2020-08-21 20:23:15,250 INFO L226 Difference]: Without dead ends: 483 [2020-08-21 20:23:15,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2020-08-21 20:23:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-21 20:23:15,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 386. [2020-08-21 20:23:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-21 20:23:15,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 486 transitions. [2020-08-21 20:23:15,431 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 486 transitions. Word has length 89 [2020-08-21 20:23:15,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:15,432 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 486 transitions. [2020-08-21 20:23:15,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 20:23:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 486 transitions. [2020-08-21 20:23:15,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-21 20:23:15,436 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:15,436 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:15,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:23:15,437 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:15,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:15,437 INFO L82 PathProgramCache]: Analyzing trace with hash -678987685, now seen corresponding path program 1 times [2020-08-21 20:23:15,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:15,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084802692] [2020-08-21 20:23:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,781 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 20:23:15,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:23:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 20:23:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 20:23:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 20:23:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:23:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 20:23:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 20:23:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 20:23:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 20:23:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 20:23:15,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084802692] [2020-08-21 20:23:15,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:15,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 20:23:15,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488220975] [2020-08-21 20:23:15,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 20:23:15,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:15,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 20:23:15,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 20:23:15,982 INFO L87 Difference]: Start difference. First operand 386 states and 486 transitions. Second operand 11 states. [2020-08-21 20:23:16,609 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 20:23:18,414 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 20:23:18,923 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 20:23:19,207 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 20:23:19,570 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 20:23:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:22,604 INFO L93 Difference]: Finished difference Result 1239 states and 1662 transitions. [2020-08-21 20:23:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 20:23:22,605 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-08-21 20:23:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:22,613 INFO L225 Difference]: With dead ends: 1239 [2020-08-21 20:23:22,614 INFO L226 Difference]: Without dead ends: 898 [2020-08-21 20:23:22,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812 [2020-08-21 20:23:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-08-21 20:23:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 703. [2020-08-21 20:23:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-21 20:23:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 890 transitions. [2020-08-21 20:23:22,839 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 890 transitions. Word has length 95 [2020-08-21 20:23:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:22,840 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 890 transitions. [2020-08-21 20:23:22,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 20:23:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 890 transitions. [2020-08-21 20:23:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 20:23:22,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:22,844 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:22,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:23:22,844 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:22,845 INFO L82 PathProgramCache]: Analyzing trace with hash -319049537, now seen corresponding path program 1 times [2020-08-21 20:23:22,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:22,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566564133] [2020-08-21 20:23:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,347 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 20:23:23,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:23:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 20:23:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 20:23:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 20:23:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:23:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 20:23:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 20:23:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 20:23:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 20:23:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 20:23:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 20:23:23,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566564133] [2020-08-21 20:23:23,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:23,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 20:23:23,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039231443] [2020-08-21 20:23:23,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:23:23,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:23,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:23:23,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:23:23,613 INFO L87 Difference]: Start difference. First operand 703 states and 890 transitions. Second operand 12 states. [2020-08-21 20:23:24,485 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 20:23:26,374 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 20:23:26,705 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 20:23:27,064 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 20:23:28,251 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 20:23:30,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:30,996 INFO L93 Difference]: Finished difference Result 1988 states and 2808 transitions. [2020-08-21 20:23:30,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 20:23:30,999 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-08-21 20:23:30,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:31,008 INFO L225 Difference]: With dead ends: 1988 [2020-08-21 20:23:31,009 INFO L226 Difference]: Without dead ends: 1330 [2020-08-21 20:23:31,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 20:23:31,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2020-08-21 20:23:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1102. [2020-08-21 20:23:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-21 20:23:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1421 transitions. [2020-08-21 20:23:31,271 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1421 transitions. Word has length 99 [2020-08-21 20:23:31,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:31,272 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1421 transitions. [2020-08-21 20:23:31,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:23:31,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1421 transitions. [2020-08-21 20:23:31,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 20:23:31,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:31,276 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:31,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:23:31,277 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:31,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:31,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1144263416, now seen corresponding path program 1 times [2020-08-21 20:23:31,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:31,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000902856] [2020-08-21 20:23:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,610 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 20:23:31,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:23:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 20:23:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 20:23:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 20:23:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:23:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 20:23:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 20:23:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 20:23:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:23:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 20:23:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 20:23:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 20:23:31,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000902856] [2020-08-21 20:23:31,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:31,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 20:23:31,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044174854] [2020-08-21 20:23:31,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 20:23:31,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:31,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 20:23:31,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:23:31,891 INFO L87 Difference]: Start difference. First operand 1102 states and 1421 transitions. Second operand 12 states. [2020-08-21 20:23:33,883 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 20:23:34,219 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-21 20:23:34,526 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 20:23:34,877 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 20:23:36,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:36,937 INFO L93 Difference]: Finished difference Result 2481 states and 3557 transitions. [2020-08-21 20:23:36,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 20:23:36,938 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-08-21 20:23:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:36,953 INFO L225 Difference]: With dead ends: 2481 [2020-08-21 20:23:36,954 INFO L226 Difference]: Without dead ends: 1424 [2020-08-21 20:23:36,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2020-08-21 20:23:36,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-08-21 20:23:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1128. [2020-08-21 20:23:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-08-21 20:23:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1449 transitions. [2020-08-21 20:23:37,282 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1449 transitions. Word has length 132 [2020-08-21 20:23:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:37,284 INFO L479 AbstractCegarLoop]: Abstraction has 1128 states and 1449 transitions. [2020-08-21 20:23:37,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 20:23:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1449 transitions. [2020-08-21 20:23:37,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 20:23:37,292 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:37,292 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:37,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:23:37,296 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:37,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:37,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1305336714, now seen corresponding path program 1 times [2020-08-21 20:23:37,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:37,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691585699] [2020-08-21 20:23:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,646 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 20:23:37,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:23:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 20:23:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 20:23:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 20:23:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:23:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 20:23:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 20:23:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 20:23:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:23:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 20:23:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 20:23:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 20:23:37,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691585699] [2020-08-21 20:23:37,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:37,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-21 20:23:37,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150670477] [2020-08-21 20:23:37,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 20:23:37,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:37,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 20:23:37,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-21 20:23:37,905 INFO L87 Difference]: Start difference. First operand 1128 states and 1449 transitions. Second operand 15 states. [2020-08-21 20:23:38,946 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 20:23:39,460 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 20:23:40,804 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 20:23:41,168 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 20:23:41,496 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 20:23:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:43,764 INFO L93 Difference]: Finished difference Result 2527 states and 3605 transitions. [2020-08-21 20:23:43,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 20:23:43,765 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 132 [2020-08-21 20:23:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:43,777 INFO L225 Difference]: With dead ends: 2527 [2020-08-21 20:23:43,777 INFO L226 Difference]: Without dead ends: 1444 [2020-08-21 20:23:43,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2020-08-21 20:23:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-08-21 20:23:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1144. [2020-08-21 20:23:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2020-08-21 20:23:43,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1465 transitions. [2020-08-21 20:23:43,987 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1465 transitions. Word has length 132 [2020-08-21 20:23:43,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:43,988 INFO L479 AbstractCegarLoop]: Abstraction has 1144 states and 1465 transitions. [2020-08-21 20:23:43,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 20:23:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1465 transitions. [2020-08-21 20:23:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 20:23:43,991 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:43,991 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:43,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 20:23:43,992 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:43,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash 856640075, now seen corresponding path program 1 times [2020-08-21 20:23:43,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:43,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905965419] [2020-08-21 20:23:43,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,422 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 20:23:44,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:23:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 20:23:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 20:23:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 20:23:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:23:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 20:23:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 20:23:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 20:23:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:23:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 20:23:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 20:23:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 20:23:44,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905965419] [2020-08-21 20:23:44,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:44,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:23:44,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26021753] [2020-08-21 20:23:44,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:23:44,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:44,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:23:44,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:23:44,773 INFO L87 Difference]: Start difference. First operand 1144 states and 1465 transitions. Second operand 10 states. [2020-08-21 20:23:45,719 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 20:23:46,812 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 20:23:51,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:51,505 INFO L93 Difference]: Finished difference Result 3668 states and 5255 transitions. [2020-08-21 20:23:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 20:23:51,506 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-21 20:23:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:51,526 INFO L225 Difference]: With dead ends: 3668 [2020-08-21 20:23:51,527 INFO L226 Difference]: Without dead ends: 2569 [2020-08-21 20:23:51,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2020-08-21 20:23:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2020-08-21 20:23:52,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2160. [2020-08-21 20:23:52,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2160 states. [2020-08-21 20:23:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2823 transitions. [2020-08-21 20:23:52,114 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2823 transitions. Word has length 132 [2020-08-21 20:23:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:52,115 INFO L479 AbstractCegarLoop]: Abstraction has 2160 states and 2823 transitions. [2020-08-21 20:23:52,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 20:23:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2823 transitions. [2020-08-21 20:23:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 20:23:52,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:52,120 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:52,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 20:23:52,121 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:52,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:52,121 INFO L82 PathProgramCache]: Analyzing trace with hash 2033559269, now seen corresponding path program 1 times [2020-08-21 20:23:52,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:52,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579442945] [2020-08-21 20:23:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,490 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 20:23:52,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 20:23:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 20:23:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 20:23:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 20:23:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:23:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 20:23:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 20:23:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 20:23:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 20:23:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:23:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 20:23:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:23:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 20:23:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 20:23:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 20:23:52,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579442945] [2020-08-21 20:23:52,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:52,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 20:23:52,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840796042] [2020-08-21 20:23:52,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 20:23:52,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:52,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 20:23:52,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:23:52,698 INFO L87 Difference]: Start difference. First operand 2160 states and 2823 transitions. Second operand 10 states. [2020-08-21 20:23:53,420 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 213