/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:06:56,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:06:56,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:06:56,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:06:56,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:06:56,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:06:56,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:06:56,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:06:56,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:06:56,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:06:56,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:06:56,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:06:56,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:06:56,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:06:56,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:06:56,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:06:56,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:06:56,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:06:56,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:06:56,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:06:56,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:06:56,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:06:56,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:06:56,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:06:56,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:06:56,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:06:56,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:06:56,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:06:56,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:06:56,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:06:56,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:06:56,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:06:56,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:06:56,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:06:56,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:06:56,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:06:56,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:06:56,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:06:56,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:06:56,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:06:56,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:06:56,476 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 [2020-08-22 06:06:56,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:06:56,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:06:56,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:06:56,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:06:56,519 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:06:56,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:06:56,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:06:56,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:06:56,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:06:56,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:06:56,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:06:56,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:06:56,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:06:56,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:06:56,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:06:56,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:06:56,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:06:56,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:06:56,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:06:56,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:06:56,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:06:56,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:06:56,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:06:56,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:06:56,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:06:56,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:06:56,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:06:56,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:06:56,525 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:06:56,525 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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:06:56,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:06:56,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:06:56,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:06:56,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:06:56,833 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:06:56,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-22 06:06:56,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51ad80e8a/394358d9e3374fce8cecc00d13156c82/FLAG6634b5669 [2020-08-22 06:06:57,486 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:06:57,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-22 06:06:57,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51ad80e8a/394358d9e3374fce8cecc00d13156c82/FLAG6634b5669 [2020-08-22 06:06:57,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/51ad80e8a/394358d9e3374fce8cecc00d13156c82 [2020-08-22 06:06:57,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:06:57,761 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:06:57,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:06:57,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:06:57,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:06:57,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:06:57" (1/1) ... [2020-08-22 06:06:57,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33932146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:57, skipping insertion in model container [2020-08-22 06:06:57,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:06:57" (1/1) ... [2020-08-22 06:06:57,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:06:57,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:06:58,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:06:58,239 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:06:58,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:06:58,382 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:06:58,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:58 WrapperNode [2020-08-22 06:06:58,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:06:58,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:06:58,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:06:58,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:06:58,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:58" (1/1) ... [2020-08-22 06:06:58,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:58" (1/1) ... [2020-08-22 06:06:58,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:58" (1/1) ... [2020-08-22 06:06:58,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:58" (1/1) ... [2020-08-22 06:06:58,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:58" (1/1) ... [2020-08-22 06:06:58,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:58" (1/1) ... [2020-08-22 06:06:58,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:58" (1/1) ... [2020-08-22 06:06:58,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:06:58,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:06:58,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:06:58,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:06:58,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:58" (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 [2020-08-22 06:06:58,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:06:58,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:06:58,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 06:06:58,552 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 06:06:58,553 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 06:06:58,553 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 06:06:58,553 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 06:06:58,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:06:58,553 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 06:06:58,554 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 06:06:58,554 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 06:06:58,554 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 06:06:58,554 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 06:06:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 06:06:58,555 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 06:06:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 06:06:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 06:06:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 06:06:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 06:06:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 06:06:58,556 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 06:06:58,557 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 06:06:58,557 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 06:06:58,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 06:06:58,557 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 06:06:58,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 06:06:58,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 06:06:58,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 06:06:58,558 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 06:06:58,559 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 06:06:58,559 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 06:06:58,559 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 06:06:58,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 06:06:58,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 06:06:58,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 06:06:58,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 06:06:58,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 06:06:58,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 06:06:58,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 06:06:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:06:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:06:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 06:06:58,560 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 06:06:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 06:06:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 06:06:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 06:06:58,561 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 06:06:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 06:06:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 06:06:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 06:06:58,562 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 06:06:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 06:06:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 06:06:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 06:06:58,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:06:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 06:06:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 06:06:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 06:06:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 06:06:58,564 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 06:06:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 06:06:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 06:06:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 06:06:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 06:06:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 06:06:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 06:06:58,565 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 06:06:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 06:06:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 06:06:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:06:58,566 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 06:06:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 06:06:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 06:06:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 06:06:58,567 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:06:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 06:06:58,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 06:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 06:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 06:06:58,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 06:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 06:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 06:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:06:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 06:06:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 06:06:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 06:06:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:06:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 06:06:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:06:59,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:06:59,699 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 06:06:59,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:06:59 BoogieIcfgContainer [2020-08-22 06:06:59,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:06:59,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:06:59,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:06:59,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:06:59,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:06:57" (1/3) ... [2020-08-22 06:06:59,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e45c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:06:59, skipping insertion in model container [2020-08-22 06:06:59,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:58" (2/3) ... [2020-08-22 06:06:59,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e45c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:06:59, skipping insertion in model container [2020-08-22 06:06:59,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:06:59" (3/3) ... [2020-08-22 06:06:59,721 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-22 06:06:59,732 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:06:59,742 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:06:59,753 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:06:59,775 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:06:59,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:06:59,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:06:59,775 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:06:59,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:06:59,776 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:06:59,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:06:59,776 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:06:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-22 06:06:59,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 06:06:59,808 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:59,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:59,810 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-22 06:06:59,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:59,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801767349] [2020-08-22 06:06:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:07:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:00,592 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:07:00,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:07:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:00,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:07:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:07:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:07:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:07:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:00,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:07:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:00,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:07:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:07:00,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801767349] [2020-08-22 06:07:00,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:07:00,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:07:00,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880915339] [2020-08-22 06:07:00,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:07:00,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:07:00,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:07:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:07:00,767 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-22 06:07:01,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:07:01,866 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-22 06:07:01,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:07:01,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 06:07:01,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:07:01,883 INFO L225 Difference]: With dead ends: 296 [2020-08-22 06:07:01,883 INFO L226 Difference]: Without dead ends: 160 [2020-08-22 06:07:01,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:07:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-22 06:07:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-22 06:07:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-22 06:07:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-22 06:07:01,977 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-22 06:07:01,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:07:01,977 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-22 06:07:01,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:07:01,978 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-22 06:07:01,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 06:07:01,981 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:07:01,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:07:01,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:07:01,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:07:01,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:07:01,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-22 06:07:01,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:07:01,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716468161] [2020-08-22 06:07:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:07:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:02,356 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:07:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:07:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:02,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:07:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:02,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:07:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:02,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:02,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:07:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:07:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:02,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 06:07:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:02,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:07:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:07:02,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716468161] [2020-08-22 06:07:02,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:07:02,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:07:02,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727270090] [2020-08-22 06:07:02,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:07:02,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:07:02,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:07:02,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:07:02,444 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-22 06:07:02,858 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:07:03,653 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-22 06:07:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:07:03,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 06:07:03,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:07:03,657 INFO L225 Difference]: With dead ends: 225 [2020-08-22 06:07:03,657 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 06:07:03,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:07:03,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 06:07:03,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-22 06:07:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-22 06:07:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-22 06:07:03,692 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-22 06:07:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:07:03,692 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-22 06:07:03,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:07:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-22 06:07:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 06:07:03,695 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:07:03,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:07:03,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:07:03,695 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:07:03,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:07:03,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-22 06:07:03,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:07:03,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073791155] [2020-08-22 06:07:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:07:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:04,044 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:07:04,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:07:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:04,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:07:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:04,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:07:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:04,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:04,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:07:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:04,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:07:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:04,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:07:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:04,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 06:07:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:07:04,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073791155] [2020-08-22 06:07:04,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:07:04,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:07:04,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103770961] [2020-08-22 06:07:04,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:07:04,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:07:04,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:07:04,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:07:04,140 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-22 06:07:04,502 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:07:04,835 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:05,093 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:05,323 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:07:06,460 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-22 06:07:06,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 06:07:06,464 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 06:07:06,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:07:06,467 INFO L225 Difference]: With dead ends: 238 [2020-08-22 06:07:06,467 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 06:07:06,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:07:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 06:07:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-22 06:07:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-22 06:07:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-22 06:07:06,500 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-22 06:07:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:07:06,501 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-22 06:07:06,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:07:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-22 06:07:06,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 06:07:06,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:07:06,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:07:06,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:07:06,504 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:07:06,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:07:06,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-22 06:07:06,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:07:06,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656713917] [2020-08-22 06:07:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:07:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:06,784 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:07:06,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:07:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:06,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:07:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:06,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:07:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:06,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:06,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:07:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:06,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:07:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:06,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:07:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:06,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 06:07:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:06,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 06:07:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:06,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 06:07:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:07:06,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656713917] [2020-08-22 06:07:06,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:07:06,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:07:06,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987224889] [2020-08-22 06:07:06,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:07:06,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:07:06,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:07:06,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:07:06,894 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-22 06:07:07,241 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:07:08,353 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:07:08,964 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-22 06:07:08,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 06:07:08,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-22 06:07:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:07:08,969 INFO L225 Difference]: With dead ends: 338 [2020-08-22 06:07:08,970 INFO L226 Difference]: Without dead ends: 244 [2020-08-22 06:07:08,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:07:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-22 06:07:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-22 06:07:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-22 06:07:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-22 06:07:09,016 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-22 06:07:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:07:09,017 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-22 06:07:09,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:07:09,017 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-22 06:07:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-22 06:07:09,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:07:09,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:07:09,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:07:09,020 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:07:09,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:07:09,021 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-22 06:07:09,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:07:09,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366565182] [2020-08-22 06:07:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:07:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,357 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:07:09,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:07:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:07:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:07:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:07:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 06:07:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:07:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:07:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 06:07:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 06:07:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 06:07:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:07:09,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366565182] [2020-08-22 06:07:09,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:07:09,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:07:09,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858158940] [2020-08-22 06:07:09,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:07:09,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:07:09,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:07:09,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:07:09,497 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-22 06:07:09,856 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:07:11,197 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:11,458 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:11,685 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:11,912 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:07:12,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:07:12,541 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-22 06:07:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 06:07:12,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-22 06:07:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:07:12,548 INFO L225 Difference]: With dead ends: 555 [2020-08-22 06:07:12,549 INFO L226 Difference]: Without dead ends: 378 [2020-08-22 06:07:12,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:07:12,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-22 06:07:12,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-22 06:07:12,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-22 06:07:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-22 06:07:12,622 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-22 06:07:12,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:07:12,623 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-22 06:07:12,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:07:12,623 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-22 06:07:12,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 06:07:12,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:07:12,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:07:12,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:07:12,626 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:07:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:07:12,626 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-22 06:07:12,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:07:12,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68108244] [2020-08-22 06:07:12,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:07:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,889 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:07:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:07:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:07:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:07:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:07:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:07:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:07:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:07:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:07:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:07:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 06:07:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:12,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:07:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:07:13,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68108244] [2020-08-22 06:07:13,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:07:13,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 06:07:13,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314504356] [2020-08-22 06:07:13,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 06:07:13,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:07:13,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 06:07:13,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-22 06:07:13,003 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-22 06:07:13,350 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:07:13,910 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:07:15,522 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:07:17,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:07:17,118 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-22 06:07:17,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 06:07:17,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-22 06:07:17,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:07:17,125 INFO L225 Difference]: With dead ends: 815 [2020-08-22 06:07:17,125 INFO L226 Difference]: Without dead ends: 627 [2020-08-22 06:07:17,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-22 06:07:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-22 06:07:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-22 06:07:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-22 06:07:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-22 06:07:17,258 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-22 06:07:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:07:17,258 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-22 06:07:17,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 06:07:17,258 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-22 06:07:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 06:07:17,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:07:17,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:07:17,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:07:17,261 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:07:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:07:17,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-22 06:07:17,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:07:17,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481182834] [2020-08-22 06:07:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:07:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,513 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:07:17,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:07:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:07:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:07:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:07:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:07:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:07:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:07:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:07:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:07:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 06:07:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:07:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:07:17,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481182834] [2020-08-22 06:07:17,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:07:17,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:07:17,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210537142] [2020-08-22 06:07:17,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:07:17,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:07:17,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:07:17,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:07:17,656 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-22 06:07:18,519 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:18,751 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:19,004 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:07:19,911 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-22 06:07:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 06:07:19,912 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-22 06:07:19,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:07:19,916 INFO L225 Difference]: With dead ends: 1006 [2020-08-22 06:07:19,916 INFO L226 Difference]: Without dead ends: 601 [2020-08-22 06:07:19,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:07:19,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-22 06:07:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-22 06:07:20,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-22 06:07:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-22 06:07:20,018 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-22 06:07:20,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:07:20,019 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-22 06:07:20,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:07:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-22 06:07:20,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 06:07:20,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:07:20,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:07:20,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 06:07:20,021 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:07:20,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:07:20,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-22 06:07:20,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:07:20,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229911296] [2020-08-22 06:07:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:07:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,296 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:07:20,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:07:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:07:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:07:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:07:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:07:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:07:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:07:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:07:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 06:07:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 06:07:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:07:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:20,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:07:20,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229911296] [2020-08-22 06:07:20,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:07:20,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 06:07:20,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426472629] [2020-08-22 06:07:20,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:07:20,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:07:20,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:07:20,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:07:20,465 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-22 06:07:21,022 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:21,290 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:21,521 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:22,211 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:22,461 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:07:22,736 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:22,962 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:23,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:07:23,953 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-22 06:07:23,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 06:07:23,954 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-22 06:07:23,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:07:23,959 INFO L225 Difference]: With dead ends: 1144 [2020-08-22 06:07:23,959 INFO L226 Difference]: Without dead ends: 612 [2020-08-22 06:07:23,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-22 06:07:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-22 06:07:24,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-22 06:07:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-22 06:07:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-22 06:07:24,059 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-22 06:07:24,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:07:24,060 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-22 06:07:24,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:07:24,060 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-22 06:07:24,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-22 06:07:24,062 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:07:24,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:07:24,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 06:07:24,063 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:07:24,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:07:24,063 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-22 06:07:24,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:07:24,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379922052] [2020-08-22 06:07:24,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:07:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,358 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:07:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:07:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:07:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:07:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:07:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:07:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:07:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:07:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:07:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 06:07:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 06:07:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 06:07:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:24,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 06:07:24,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379922052] [2020-08-22 06:07:24,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:07:24,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 06:07:24,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813212009] [2020-08-22 06:07:24,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 06:07:24,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:07:24,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 06:07:24,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 06:07:24,587 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-22 06:07:25,004 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:07:25,708 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:26,546 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:07:26,864 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:07:27,141 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:07:27,387 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:07:27,701 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 06:07:27,994 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:07:28,505 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-22 06:07:28,767 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:07:29,068 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:07:29,366 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 06:07:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:07:31,347 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-22 06:07:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 06:07:31,348 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-22 06:07:31,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:07:31,355 INFO L225 Difference]: With dead ends: 1664 [2020-08-22 06:07:31,356 INFO L226 Difference]: Without dead ends: 1125 [2020-08-22 06:07:31,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-22 06:07:31,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-22 06:07:31,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-22 06:07:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-22 06:07:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-22 06:07:31,592 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-22 06:07:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:07:31,593 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-22 06:07:31,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 06:07:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-22 06:07:31,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-22 06:07:31,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:07:31,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:07:31,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 06:07:31,597 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:07:31,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:07:31,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-22 06:07:31,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:07:31,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3854447] [2020-08-22 06:07:31,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:07:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:31,923 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:07:31,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:07:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:31,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:07:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:07:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:31,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:31,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:07:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:07:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 06:07:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:07:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:07:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:07:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 06:07:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 06:07:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 06:07:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 06:07:32,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3854447] [2020-08-22 06:07:32,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:07:32,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 06:07:32,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372808022] [2020-08-22 06:07:32,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 06:07:32,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:07:32,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 06:07:32,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:07:32,115 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-22 06:07:33,012 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:33,367 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:33,651 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:34,240 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:07:35,043 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:07:35,437 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:36,004 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:36,279 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:07:36,565 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:07:38,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:07:38,581 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-22 06:07:38,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 06:07:38,588 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-22 06:07:38,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:07:38,595 INFO L225 Difference]: With dead ends: 2205 [2020-08-22 06:07:38,596 INFO L226 Difference]: Without dead ends: 1167 [2020-08-22 06:07:38,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 06:07:38,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-22 06:07:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-22 06:07:38,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-22 06:07:38,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-22 06:07:38,780 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-22 06:07:38,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:07:38,780 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-22 06:07:38,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 06:07:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-22 06:07:38,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-22 06:07:38,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:07:38,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:07:38,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 06:07:38,783 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:07:38,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:07:38,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-22 06:07:38,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:07:38,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593415879] [2020-08-22 06:07:38,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:07:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,152 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:07:39,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:07:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:07:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:07:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:07:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 06:07:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:07:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 06:07:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:07:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:07:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:07:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 06:07:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 06:07:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 06:07:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:07:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 06:07:39,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593415879] [2020-08-22 06:07:39,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:07:39,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 06:07:39,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961755231] [2020-08-22 06:07:39,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 06:07:39,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:07:39,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 06:07:39,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-22 06:07:39,334 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-22 06:07:40,104 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:40,368 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:40,603 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:07:41,732 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:07:42,215 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:07:42,531 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:07:42,806 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 06:07:43,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:07:43,516 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-22 06:07:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 06:07:43,517 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-22 06:07:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:07:43,518 INFO L225 Difference]: With dead ends: 1688 [2020-08-22 06:07:43,518 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 06:07:43,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-22 06:07:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 06:07:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 06:07:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 06:07:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 06:07:43,526 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-22 06:07:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:07:43,527 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 06:07:43,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 06:07:43,527 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 06:07:43,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 06:07:43,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 06:07:43,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 06:07:44,735 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-22 06:07:47,441 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-22 06:07:47,890 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-22 06:07:48,202 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-22 06:07:48,690 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-22 06:07:49,730 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-22 06:07:50,910 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-22 06:07:51,082 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-22 06:07:51,545 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-22 06:07:51,733 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-22 06:07:52,003 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-22 06:07:52,174 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-22 06:07:53,312 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-22 06:07:53,485 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-22 06:07:54,297 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-22 06:07:54,599 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 27 [2020-08-22 06:07:55,198 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30