/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:20:34,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:20:34,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:20:34,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:20:34,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:20:34,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:20:34,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:20:34,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:20:34,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:20:34,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:20:34,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:20:34,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:20:34,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:20:34,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:20:34,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:20:34,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:20:34,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:20:34,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:20:34,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:20:34,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:20:34,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:20:34,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:20:34,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:20:34,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:20:34,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:20:34,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:20:34,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:20:34,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:20:34,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:20:34,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:20:34,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:20:34,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:20:34,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:20:34,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:20:34,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:20:34,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:20:34,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:20:34,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:20:34,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:20:34,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:20:34,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:20:34,480 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 [2020-08-19 03:20:34,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:20:34,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:20:34,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:20:34,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:20:34,504 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:20:34,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:20:34,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:20:34,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:20:34,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:20:34,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:20:34,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:20:34,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:20:34,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:20:34,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:20:34,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:20:34,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:20:34,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:20:34,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:20:34,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:20:34,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:20:34,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:20:34,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:20:34,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:20:34,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:20:34,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:20:34,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:20:34,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:20:34,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:20:34,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:20:34,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:20:34,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:20:34,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:20:34,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:20:34,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:20:34,881 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:20:34,882 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-19 03:20:34,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d4545438/0491bfcf1b70491bafef6f69c61bc687/FLAG870a2b733 [2020-08-19 03:20:35,491 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:20:35,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-19 03:20:35,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d4545438/0491bfcf1b70491bafef6f69c61bc687/FLAG870a2b733 [2020-08-19 03:20:35,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d4545438/0491bfcf1b70491bafef6f69c61bc687 [2020-08-19 03:20:35,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:20:35,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:20:35,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:20:35,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:20:35,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:20:35,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:20:35" (1/1) ... [2020-08-19 03:20:35,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63832a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:35, skipping insertion in model container [2020-08-19 03:20:35,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:20:35" (1/1) ... [2020-08-19 03:20:35,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:20:35,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:20:36,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:20:36,366 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:20:36,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:20:36,527 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:20:36,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:36 WrapperNode [2020-08-19 03:20:36,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:20:36,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:20:36,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:20:36,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:20:36,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:36" (1/1) ... [2020-08-19 03:20:36,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:36" (1/1) ... [2020-08-19 03:20:36,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:36" (1/1) ... [2020-08-19 03:20:36,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:36" (1/1) ... [2020-08-19 03:20:36,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:36" (1/1) ... [2020-08-19 03:20:36,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:36" (1/1) ... [2020-08-19 03:20:36,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:36" (1/1) ... [2020-08-19 03:20:36,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:20:36,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:20:36,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:20:36,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:20:36,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:36" (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 [2020-08-19 03:20:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:20:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:20:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:20:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:20:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:20:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:20:36,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:20:36,752 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:20:36,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:20:36,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:20:36,753 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:20:36,753 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:20:36,753 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:20:36,754 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 03:20:36,754 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:20:36,755 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:20:36,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:20:36,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:20:36,755 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:20:36,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:20:36,756 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 03:20:36,756 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:20:36,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:20:36,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 03:20:36,756 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:20:36,757 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:20:36,758 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:20:36,758 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:20:36,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:20:36,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:20:36,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:20:36,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:20:36,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:20:36,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:20:36,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:20:36,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:20:36,760 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:20:36,760 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:20:36,760 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:20:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:20:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:20:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:20:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:20:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:20:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:20:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:20:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:20:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:20:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:20:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:20:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:20:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:20:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:20:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:20:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:20:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 03:20:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 03:20:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:20:36,763 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:20:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:20:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 03:20:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:20:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:20:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:20:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:20:36,764 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:20:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:20:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:20:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:20:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:20:36,765 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:20:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:20:36,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:20:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:20:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:20:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:20:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:20:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:20:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:20:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:20:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:20:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:20:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:20:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:20:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:20:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:20:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:20:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:20:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:20:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:20:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:20:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:20:37,914 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:20:37,914 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:20:37,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:20:37 BoogieIcfgContainer [2020-08-19 03:20:37,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:20:37,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:20:37,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:20:37,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:20:37,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:20:35" (1/3) ... [2020-08-19 03:20:37,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba3ae5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:20:37, skipping insertion in model container [2020-08-19 03:20:37,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:20:36" (2/3) ... [2020-08-19 03:20:37,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba3ae5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:20:37, skipping insertion in model container [2020-08-19 03:20:37,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:20:37" (3/3) ... [2020-08-19 03:20:37,928 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-08-19 03:20:37,939 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:20:37,946 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:20:37,957 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:20:37,980 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:20:37,980 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:20:37,981 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:20:37,981 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:20:37,981 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:20:37,981 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:20:37,981 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:20:37,982 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:20:38,005 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 03:20:38,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 03:20:38,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:38,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:20:38,017 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:38,024 INFO L82 PathProgramCache]: Analyzing trace with hash 2058113087, now seen corresponding path program 1 times [2020-08-19 03:20:38,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:38,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130180143] [2020-08-19 03:20:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:38,726 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:38,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:38,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:38,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:20:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:20:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:20:38,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130180143] [2020-08-19 03:20:38,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:38,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:20:38,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819496089] [2020-08-19 03:20:38,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:20:38,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:38,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:20:38,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:20:38,913 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 3 states. [2020-08-19 03:20:40,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:40,082 INFO L93 Difference]: Finished difference Result 295 states and 384 transitions. [2020-08-19 03:20:40,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:20:40,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 03:20:40,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:40,099 INFO L225 Difference]: With dead ends: 295 [2020-08-19 03:20:40,099 INFO L226 Difference]: Without dead ends: 160 [2020-08-19 03:20:40,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:20:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-19 03:20:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 126. [2020-08-19 03:20:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-19 03:20:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-19 03:20:40,205 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-08-19 03:20:40,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:40,207 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-19 03:20:40,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:20:40,207 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-19 03:20:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 03:20:40,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:40,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:20:40,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:20:40,213 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:40,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:40,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1232914971, now seen corresponding path program 1 times [2020-08-19 03:20:40,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:40,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616508043] [2020-08-19 03:20:40,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:40,634 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:40,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:40,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:40,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:40,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:40,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:20:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:20:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:20:40,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616508043] [2020-08-19 03:20:40,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:40,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:20:40,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394861447] [2020-08-19 03:20:40,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:20:40,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:40,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:20:40,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:20:40,681 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 4 states. [2020-08-19 03:20:41,107 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:41,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:41,862 INFO L93 Difference]: Finished difference Result 219 states and 265 transitions. [2020-08-19 03:20:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:20:41,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 03:20:41,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:41,867 INFO L225 Difference]: With dead ends: 219 [2020-08-19 03:20:41,867 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 03:20:41,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:20:41,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 03:20:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2020-08-19 03:20:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-19 03:20:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-19 03:20:41,907 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-08-19 03:20:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:41,908 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-19 03:20:41,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:20:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-19 03:20:41,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 03:20:41,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:41,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:20:41,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:20:41,910 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:41,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:41,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1264843506, now seen corresponding path program 1 times [2020-08-19 03:20:41,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:41,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659998073] [2020-08-19 03:20:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:42,269 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:42,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:42,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:42,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:42,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:42,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:20:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:42,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:20:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:20:42,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659998073] [2020-08-19 03:20:42,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:42,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:20:42,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430819141] [2020-08-19 03:20:42,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:20:42,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:42,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:20:42,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:20:42,337 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 8 states. [2020-08-19 03:20:42,684 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:42,960 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:43,215 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:43,437 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:44,146 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:45,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:45,706 INFO L93 Difference]: Finished difference Result 403 states and 495 transitions. [2020-08-19 03:20:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:20:45,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 03:20:45,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:45,713 INFO L225 Difference]: With dead ends: 403 [2020-08-19 03:20:45,714 INFO L226 Difference]: Without dead ends: 310 [2020-08-19 03:20:45,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:20:45,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-19 03:20:45,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 240. [2020-08-19 03:20:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-19 03:20:45,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 286 transitions. [2020-08-19 03:20:45,786 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 286 transitions. Word has length 51 [2020-08-19 03:20:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:45,787 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 286 transitions. [2020-08-19 03:20:45,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:20:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 286 transitions. [2020-08-19 03:20:45,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 03:20:45,790 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:45,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:20:45,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:20:45,790 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:45,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:45,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1557328557, now seen corresponding path program 1 times [2020-08-19 03:20:45,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:45,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101033891] [2020-08-19 03:20:45,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:46,106 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:46,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:46,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:46,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:20:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:20:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:46,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 03:20:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:20:46,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101033891] [2020-08-19 03:20:46,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:46,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:20:46,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248118144] [2020-08-19 03:20:46,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:20:46,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:46,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:20:46,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:20:46,232 INFO L87 Difference]: Start difference. First operand 240 states and 286 transitions. Second operand 8 states. [2020-08-19 03:20:46,613 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:47,634 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:47,954 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:48,212 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:48,455 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:48,795 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:49,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:49,789 INFO L93 Difference]: Finished difference Result 778 states and 999 transitions. [2020-08-19 03:20:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:20:49,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 03:20:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:49,796 INFO L225 Difference]: With dead ends: 778 [2020-08-19 03:20:49,797 INFO L226 Difference]: Without dead ends: 562 [2020-08-19 03:20:49,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:20:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-19 03:20:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 435. [2020-08-19 03:20:49,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-19 03:20:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 522 transitions. [2020-08-19 03:20:49,906 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 522 transitions. Word has length 57 [2020-08-19 03:20:49,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:49,907 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 522 transitions. [2020-08-19 03:20:49,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:20:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 522 transitions. [2020-08-19 03:20:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 03:20:49,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:49,910 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] [2020-08-19 03:20:49,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:20:49,911 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:49,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:49,911 INFO L82 PathProgramCache]: Analyzing trace with hash 2005186865, now seen corresponding path program 1 times [2020-08-19 03:20:49,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:49,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102561133] [2020-08-19 03:20:49,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:50,217 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:50,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:50,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:50,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:50,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:20:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:50,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:20:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:50,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:20:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:50,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 03:20:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:20:50,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102561133] [2020-08-19 03:20:50,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:50,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:20:50,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572677112] [2020-08-19 03:20:50,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:20:50,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:50,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:20:50,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:20:50,352 INFO L87 Difference]: Start difference. First operand 435 states and 522 transitions. Second operand 9 states. [2020-08-19 03:20:50,791 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:51,750 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:52,054 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:52,332 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:52,947 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:53,250 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:20:54,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:54,067 INFO L93 Difference]: Finished difference Result 1224 states and 1608 transitions. [2020-08-19 03:20:54,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 03:20:54,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-19 03:20:54,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:54,074 INFO L225 Difference]: With dead ends: 1224 [2020-08-19 03:20:54,075 INFO L226 Difference]: Without dead ends: 813 [2020-08-19 03:20:54,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:20:54,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-08-19 03:20:54,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 655. [2020-08-19 03:20:54,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-19 03:20:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 799 transitions. [2020-08-19 03:20:54,211 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 799 transitions. Word has length 61 [2020-08-19 03:20:54,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:54,212 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 799 transitions. [2020-08-19 03:20:54,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:20:54,212 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 799 transitions. [2020-08-19 03:20:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:20:54,215 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:54,216 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] [2020-08-19 03:20:54,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:20:54,216 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:54,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:54,217 INFO L82 PathProgramCache]: Analyzing trace with hash 90269024, now seen corresponding path program 1 times [2020-08-19 03:20:54,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:54,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965843207] [2020-08-19 03:20:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,474 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:54,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:20:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:20:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:20:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:20:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:20:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 03:20:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:20:54,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965843207] [2020-08-19 03:20:54,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:54,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:20:54,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437069761] [2020-08-19 03:20:54,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:20:54,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:54,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:20:54,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:20:54,684 INFO L87 Difference]: Start difference. First operand 655 states and 799 transitions. Second operand 9 states. [2020-08-19 03:20:55,428 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:20:56,324 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:56,576 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:20:56,844 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:20:57,112 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:20:58,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:20:58,878 INFO L93 Difference]: Finished difference Result 2244 states and 3141 transitions. [2020-08-19 03:20:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:20:58,878 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-19 03:20:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:20:58,890 INFO L225 Difference]: With dead ends: 2244 [2020-08-19 03:20:58,890 INFO L226 Difference]: Without dead ends: 1613 [2020-08-19 03:20:58,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:20:58,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-08-19 03:20:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1239. [2020-08-19 03:20:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-08-19 03:20:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1508 transitions. [2020-08-19 03:20:59,266 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1508 transitions. Word has length 93 [2020-08-19 03:20:59,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:20:59,267 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1508 transitions. [2020-08-19 03:20:59,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:20:59,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1508 transitions. [2020-08-19 03:20:59,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:20:59,277 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:20:59,277 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] [2020-08-19 03:20:59,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:20:59,279 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:20:59,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:20:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1880670433, now seen corresponding path program 1 times [2020-08-19 03:20:59,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:20:59,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079180477] [2020-08-19 03:20:59,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:20:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,639 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:20:59,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:20:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:20:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:20:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:20:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:20:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:20:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:20:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:20:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:20:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:20:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:20:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 03:20:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:20:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:20:59,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079180477] [2020-08-19 03:20:59,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:20:59,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:20:59,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604539994] [2020-08-19 03:20:59,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:20:59,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:20:59,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:20:59,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:20:59,857 INFO L87 Difference]: Start difference. First operand 1239 states and 1508 transitions. Second operand 9 states. [2020-08-19 03:21:01,061 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:01,327 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:21:01,586 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:01,835 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:03,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:03,104 INFO L93 Difference]: Finished difference Result 2857 states and 3834 transitions. [2020-08-19 03:21:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:21:03,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-19 03:21:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:03,120 INFO L225 Difference]: With dead ends: 2857 [2020-08-19 03:21:03,120 INFO L226 Difference]: Without dead ends: 1642 [2020-08-19 03:21:03,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:21:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-08-19 03:21:03,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1279. [2020-08-19 03:21:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-19 03:21:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1548 transitions. [2020-08-19 03:21:03,450 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1548 transitions. Word has length 93 [2020-08-19 03:21:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:03,450 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1548 transitions. [2020-08-19 03:21:03,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:21:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1548 transitions. [2020-08-19 03:21:03,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 03:21:03,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:03,455 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] [2020-08-19 03:21:03,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:21:03,455 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:03,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:03,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1516903585, now seen corresponding path program 1 times [2020-08-19 03:21:03,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:03,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934446899] [2020-08-19 03:21:03,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,807 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:03,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 03:21:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:21:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:21:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:03,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 03:21:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:21:04,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934446899] [2020-08-19 03:21:04,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:21:04,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:21:04,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348688800] [2020-08-19 03:21:04,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:21:04,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:04,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:21:04,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:21:04,015 INFO L87 Difference]: Start difference. First operand 1279 states and 1548 transitions. Second operand 11 states. [2020-08-19 03:21:04,872 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:05,100 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:05,329 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:05,969 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:06,259 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:06,499 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:21:07,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:07,634 INFO L93 Difference]: Finished difference Result 2491 states and 3236 transitions. [2020-08-19 03:21:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:21:07,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 03:21:07,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:07,644 INFO L225 Difference]: With dead ends: 2491 [2020-08-19 03:21:07,644 INFO L226 Difference]: Without dead ends: 1236 [2020-08-19 03:21:07,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:21:07,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2020-08-19 03:21:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1005. [2020-08-19 03:21:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-08-19 03:21:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1188 transitions. [2020-08-19 03:21:07,849 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1188 transitions. Word has length 93 [2020-08-19 03:21:07,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:07,849 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1188 transitions. [2020-08-19 03:21:07,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:21:07,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1188 transitions. [2020-08-19 03:21:07,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 03:21:07,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:07,853 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] [2020-08-19 03:21:07,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:21:07,854 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:07,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:07,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1451570632, now seen corresponding path program 1 times [2020-08-19 03:21:07,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:07,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743623068] [2020-08-19 03:21:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,179 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:08,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:21:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:21:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:21:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 03:21:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 03:21:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:21:08,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743623068] [2020-08-19 03:21:08,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:21:08,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 03:21:08,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968112362] [2020-08-19 03:21:08,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 03:21:08,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:08,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 03:21:08,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-19 03:21:08,406 INFO L87 Difference]: Start difference. First operand 1005 states and 1188 transitions. Second operand 17 states. [2020-08-19 03:21:09,097 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:09,429 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:09,670 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:09,910 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:21:10,521 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:11,133 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:11,503 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:12,468 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:12,735 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:13,113 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:13,392 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:21:13,953 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-19 03:21:14,494 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-19 03:21:15,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:15,774 INFO L93 Difference]: Finished difference Result 2201 states and 2748 transitions. [2020-08-19 03:21:15,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 03:21:15,775 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-19 03:21:15,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:15,784 INFO L225 Difference]: With dead ends: 2201 [2020-08-19 03:21:15,784 INFO L226 Difference]: Without dead ends: 1220 [2020-08-19 03:21:15,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-19 03:21:15,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-19 03:21:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 983. [2020-08-19 03:21:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-08-19 03:21:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1139 transitions. [2020-08-19 03:21:15,976 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1139 transitions. Word has length 97 [2020-08-19 03:21:15,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:15,977 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1139 transitions. [2020-08-19 03:21:15,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 03:21:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1139 transitions. [2020-08-19 03:21:15,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 03:21:15,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:15,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:21:15,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:21:15,987 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:15,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:15,987 INFO L82 PathProgramCache]: Analyzing trace with hash -914965907, now seen corresponding path program 1 times [2020-08-19 03:21:15,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:15,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179855668] [2020-08-19 03:21:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,318 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:21:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:21:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:21:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:21:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:21:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:21:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:21:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:21:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:21:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:21:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:21:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 03:21:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 03:21:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 03:21:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:21:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 03:21:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 03:21:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:21:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-19 03:21:16,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179855668] [2020-08-19 03:21:16,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:21:16,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 03:21:16,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392293077] [2020-08-19 03:21:16,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:21:16,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:21:16,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:21:16,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:21:16,470 INFO L87 Difference]: Start difference. First operand 983 states and 1139 transitions. Second operand 9 states. [2020-08-19 03:21:17,341 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:18,869 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:21:19,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:21:19,602 INFO L93 Difference]: Finished difference Result 2643 states and 3463 transitions. [2020-08-19 03:21:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 03:21:19,603 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-08-19 03:21:19,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:21:19,618 INFO L225 Difference]: With dead ends: 2643 [2020-08-19 03:21:19,618 INFO L226 Difference]: Without dead ends: 1980 [2020-08-19 03:21:19,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-08-19 03:21:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-19 03:21:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1593. [2020-08-19 03:21:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-08-19 03:21:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1869 transitions. [2020-08-19 03:21:19,955 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1869 transitions. Word has length 132 [2020-08-19 03:21:19,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:21:19,957 INFO L479 AbstractCegarLoop]: Abstraction has 1593 states and 1869 transitions. [2020-08-19 03:21:19,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:21:19,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1869 transitions. [2020-08-19 03:21:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 03:21:19,964 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:21:19,965 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:21:19,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:21:19,965 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:21:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:21:19,966 INFO L82 PathProgramCache]: Analyzing trace with hash -405492817, now seen corresponding path program 1 times [2020-08-19 03:21:19,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:21:19,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336291875] [2020-08-19 03:21:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:21:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:21:20,047 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:21:20,048 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:21:20,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:21:20,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:21:20 BoogieIcfgContainer [2020-08-19 03:21:20,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:21:20,111 INFO L168 Benchmark]: Toolchain (without parser) took 44267.61 ms. Allocated memory was 142.1 MB in the beginning and 797.4 MB in the end (delta: 655.4 MB). Free memory was 103.8 MB in the beginning and 106.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 652.9 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:20,113 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 03:21:20,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.30 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 103.6 MB in the beginning and 171.4 MB in the end (delta: -67.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:20,114 INFO L168 Benchmark]: Boogie Preprocessor took 134.12 ms. Allocated memory is still 203.4 MB. Free memory was 170.8 MB in the beginning and 167.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:20,117 INFO L168 Benchmark]: RCFGBuilder took 1256.69 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 167.0 MB in the beginning and 191.0 MB in the end (delta: -24.0 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:20,119 INFO L168 Benchmark]: TraceAbstraction took 42180.50 ms. Allocated memory was 233.8 MB in the beginning and 797.4 MB in the end (delta: 563.6 MB). Free memory was 189.7 MB in the beginning and 106.3 MB in the end (delta: 83.4 MB). Peak memory consumption was 647.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:21:20,123 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.30 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 103.6 MB in the beginning and 171.4 MB in the end (delta: -67.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.12 ms. Allocated memory is still 203.4 MB. Free memory was 170.8 MB in the beginning and 167.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1256.69 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 167.0 MB in the beginning and 191.0 MB in the end (delta: -24.0 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42180.50 ms. Allocated memory was 233.8 MB in the beginning and 797.4 MB in the end (delta: 563.6 MB). Free memory was 189.7 MB in the beginning and 106.3 MB in the end (delta: 83.4 MB). Peak memory consumption was 647.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 405]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L147] int pumpRunning = 0; [L148] int systemActive = 1; [L436] int cleanupTimeShifts = 4; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L512] int retValue_acc ; [L513] int tmp ; [L517] FCALL select_helpers() [L518] FCALL select_features() [L519] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L519] RET, EXPR valid_product() [L519] tmp = valid_product() [L521] COND TRUE \read(tmp) [L523] FCALL setup() [L524] CALL runTest() [L503] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND FALSE !(\read(tmp___0)) [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L299] int retValue_acc ; [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L305] RET, EXPR isHighWaterSensorDry() [L305] tmp = isHighWaterSensorDry() [L307] COND FALSE !(\read(tmp)) [L310] tmp___0 = 1 [L312] retValue_acc = tmp___0 [L313] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L218] int tmp ; [L222] CALL, EXPR isMethaneAlarm() [L243] int retValue_acc ; [L247] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L247] RET, EXPR isMethaneLevelCritical() [L247] retValue_acc = isMethaneLevelCritical() [L249] return (retValue_acc); [L222] RET, EXPR isMethaneAlarm() [L222] tmp = isMethaneAlarm() [L224] COND FALSE !(\read(tmp)) [L228] CALL activatePump__wrappee__highWaterSensor() [L212] pumpRunning = 1 [L228] RET activatePump__wrappee__highWaterSensor() [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND FALSE !(\read(tmp)) [L170] RET __utac_acc__Specification1_spec__1() [L389] RET timeShift() [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND FALSE !(\read(tmp)) [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND TRUE \read(tmp) [L420] CALL, EXPR isPumpRunning() [L254] int retValue_acc ; [L257] retValue_acc = pumpRunning [L258] return (retValue_acc); [L420] RET, EXPR isPumpRunning() [L420] tmp___0 = isPumpRunning() [L422] COND TRUE \read(tmp___0) [L424] CALL __automaton_fail() [L405] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.0s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 34.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1227 SDtfs, 2978 SDslu, 1540 SDs, 0 SdLazy, 8007 SolverSat, 2016 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 279 SyntacticMatches, 5 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1593occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 2008 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 247082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 37/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...