/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=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:48:02,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:48:02,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:48:02,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:48:02,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:48:02,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:48:02,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:48:02,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:48:02,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:48:02,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:48:02,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:48:02,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:48:02,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:48:02,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:48:02,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:48:02,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:48:02,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:48:02,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:48:02,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:48:02,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:48:02,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:48:02,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:48:02,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:48:02,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:48:02,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:48:02,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:48:02,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:48:02,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:48:02,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:48:02,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:48:02,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:48:02,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:48:02,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:48:02,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:48:02,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:48:02,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:48:02,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:48:02,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:48:02,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:48:02,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:48:02,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:48:02,517 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 05:48:02,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:48:02,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:48:02,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:48:02,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:48:02,547 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:48:02,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:48:02,548 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:48:02,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:48:02,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:48:02,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:48:02,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:48:02,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:48:02,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:48:02,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:48:02,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:48:02,549 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:48:02,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:48:02,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:48:02,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:48:02,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:48:02,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:48:02,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:48:02,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:48:02,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:48:02,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:48:02,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:48:02,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:48:02,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:48:02,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:48:02,552 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=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:48:02,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:48:02,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:48:02,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:48:02,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:48:02,897 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:48:02,898 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c [2020-08-19 05:48:02,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cd746ccb/b96244f6c81a407bb0a24606ccb3e647/FLAG75389b701 [2020-08-19 05:48:03,474 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:48:03,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product33.cil.c [2020-08-19 05:48:03,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cd746ccb/b96244f6c81a407bb0a24606ccb3e647/FLAG75389b701 [2020-08-19 05:48:03,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cd746ccb/b96244f6c81a407bb0a24606ccb3e647 [2020-08-19 05:48:03,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:48:03,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:48:03,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:48:03,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:48:03,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:48:03,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:48:03" (1/1) ... [2020-08-19 05:48:03,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:03, skipping insertion in model container [2020-08-19 05:48:03,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:48:03" (1/1) ... [2020-08-19 05:48:03,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:48:03,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:48:04,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:48:04,329 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:48:04,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:48:04,441 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:48:04,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:04 WrapperNode [2020-08-19 05:48:04,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:48:04,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:48:04,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:48:04,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:48:04,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:04" (1/1) ... [2020-08-19 05:48:04,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:04" (1/1) ... [2020-08-19 05:48:04,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:04" (1/1) ... [2020-08-19 05:48:04,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:04" (1/1) ... [2020-08-19 05:48:04,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:04" (1/1) ... [2020-08-19 05:48:04,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:04" (1/1) ... [2020-08-19 05:48:04,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:04" (1/1) ... [2020-08-19 05:48:04,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:48:04,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:48:04,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:48:04,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:48:04,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:04" (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 05:48:04,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:48:04,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:48:04,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:48:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:48:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:48:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:48:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:48:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:48:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:48:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:48:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:48:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:48:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:48:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:48:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:48:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:48:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:48:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:48:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:48:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:48:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:48:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:48:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:48:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:48:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:48:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:48:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:48:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:48:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:48:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:48:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:48:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:48:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:48:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:48:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:48:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:48:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 05:48:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 05:48:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:48:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:48:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:48:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:48:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:48:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:48:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:48:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:48:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:48:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:48:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:48:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:48:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:48:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:48:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:48:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:48:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:48:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:48:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:48:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:48:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 05:48:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:48:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 05:48:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:48:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:48:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:48:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:48:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:48:05,691 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:48:05,691 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:48:05,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:48:05 BoogieIcfgContainer [2020-08-19 05:48:05,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:48:05,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:48:05,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:48:05,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:48:05,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:48:03" (1/3) ... [2020-08-19 05:48:05,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d667eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:48:05, skipping insertion in model container [2020-08-19 05:48:05,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:04" (2/3) ... [2020-08-19 05:48:05,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d667eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:48:05, skipping insertion in model container [2020-08-19 05:48:05,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:48:05" (3/3) ... [2020-08-19 05:48:05,705 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product33.cil.c [2020-08-19 05:48:05,716 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:48:05,724 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:48:05,738 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:48:05,763 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:48:05,763 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:48:05,763 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:48:05,764 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:48:05,764 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:48:05,764 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:48:05,764 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:48:05,764 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:48:05,786 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-08-19 05:48:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 05:48:05,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:05,796 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 05:48:05,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:05,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:05,801 INFO L82 PathProgramCache]: Analyzing trace with hash -884456721, now seen corresponding path program 1 times [2020-08-19 05:48:05,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:05,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568163247] [2020-08-19 05:48:05,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:06,507 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:06,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:06,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:06,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:06,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:06,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:48:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:06,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 05:48:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:06,611 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 05:48:06,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568163247] [2020-08-19 05:48:06,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:06,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:48:06,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302598681] [2020-08-19 05:48:06,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:48:06,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:06,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:48:06,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:48:06,639 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 4 states. [2020-08-19 05:48:07,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:07,584 INFO L93 Difference]: Finished difference Result 248 states and 328 transitions. [2020-08-19 05:48:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:48:07,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 05:48:07,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:07,625 INFO L225 Difference]: With dead ends: 248 [2020-08-19 05:48:07,625 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 05:48:07,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:48:07,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 05:48:07,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 110. [2020-08-19 05:48:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-19 05:48:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2020-08-19 05:48:07,755 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 51 [2020-08-19 05:48:07,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:07,756 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2020-08-19 05:48:07,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:48:07,756 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2020-08-19 05:48:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:48:07,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:07,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:48:07,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:48:07,762 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:07,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:07,762 INFO L82 PathProgramCache]: Analyzing trace with hash -101366549, now seen corresponding path program 1 times [2020-08-19 05:48:07,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:07,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84731194] [2020-08-19 05:48:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:08,093 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:08,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:08,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:08,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:08,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:48:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:48:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:08,145 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 05:48:08,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84731194] [2020-08-19 05:48:08,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:08,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:48:08,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085676850] [2020-08-19 05:48:08,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:48:08,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:08,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:48:08,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:48:08,149 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand 5 states. [2020-08-19 05:48:08,650 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:09,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:09,363 INFO L93 Difference]: Finished difference Result 193 states and 239 transitions. [2020-08-19 05:48:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:48:09,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 05:48:09,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:09,368 INFO L225 Difference]: With dead ends: 193 [2020-08-19 05:48:09,368 INFO L226 Difference]: Without dead ends: 129 [2020-08-19 05:48:09,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:48:09,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-19 05:48:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-08-19 05:48:09,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-19 05:48:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2020-08-19 05:48:09,412 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 52 [2020-08-19 05:48:09,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:09,413 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2020-08-19 05:48:09,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:48:09,413 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2020-08-19 05:48:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 05:48:09,415 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:09,415 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] [2020-08-19 05:48:09,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:48:09,416 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:09,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:09,417 INFO L82 PathProgramCache]: Analyzing trace with hash -388267202, now seen corresponding path program 1 times [2020-08-19 05:48:09,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:09,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513053284] [2020-08-19 05:48:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:09,767 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:09,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:09,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:09,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:09,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:09,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:09,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:09,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 05:48:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:48:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:09,886 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 05:48:09,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513053284] [2020-08-19 05:48:09,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:09,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:48:09,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258087160] [2020-08-19 05:48:09,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:48:09,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:48:09,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:48:09,889 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand 9 states. [2020-08-19 05:48:10,304 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:10,652 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:10,913 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:11,164 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:12,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:12,182 INFO L93 Difference]: Finished difference Result 202 states and 254 transitions. [2020-08-19 05:48:12,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:48:12,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 05:48:12,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:12,185 INFO L225 Difference]: With dead ends: 202 [2020-08-19 05:48:12,186 INFO L226 Difference]: Without dead ends: 129 [2020-08-19 05:48:12,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:48:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-19 05:48:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-08-19 05:48:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-19 05:48:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-08-19 05:48:12,217 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 56 [2020-08-19 05:48:12,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:12,218 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-08-19 05:48:12,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:48:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-08-19 05:48:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 05:48:12,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:12,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:48:12,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:48:12,221 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:12,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:12,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1251165603, now seen corresponding path program 1 times [2020-08-19 05:48:12,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:12,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763518517] [2020-08-19 05:48:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:12,498 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:12,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:12,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:12,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:12,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:12,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:12,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:48:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:12,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:48:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 05:48:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:12,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 05:48:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:12,616 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 05:48:12,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763518517] [2020-08-19 05:48:12,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:12,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 05:48:12,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656625123] [2020-08-19 05:48:12,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:48:12,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:12,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:48:12,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:48:12,619 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 7 states. [2020-08-19 05:48:13,007 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:14,168 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:14,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:14,660 INFO L93 Difference]: Finished difference Result 287 states and 364 transitions. [2020-08-19 05:48:14,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:48:14,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-08-19 05:48:14,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:14,667 INFO L225 Difference]: With dead ends: 287 [2020-08-19 05:48:14,667 INFO L226 Difference]: Without dead ends: 214 [2020-08-19 05:48:14,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:48:14,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-19 05:48:14,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 168. [2020-08-19 05:48:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 05:48:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 195 transitions. [2020-08-19 05:48:14,713 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 195 transitions. Word has length 64 [2020-08-19 05:48:14,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:14,714 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 195 transitions. [2020-08-19 05:48:14,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:48:14,714 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 195 transitions. [2020-08-19 05:48:14,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 05:48:14,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:14,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:48:14,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:48:14,717 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:14,717 INFO L82 PathProgramCache]: Analyzing trace with hash 155242328, now seen corresponding path program 1 times [2020-08-19 05:48:14,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:14,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625114801] [2020-08-19 05:48:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,044 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:15,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:48:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:48:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:48:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:48:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 05:48:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 05:48:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,143 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 05:48:15,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625114801] [2020-08-19 05:48:15,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:15,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:48:15,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734091067] [2020-08-19 05:48:15,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:48:15,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:15,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:48:15,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:48:15,145 INFO L87 Difference]: Start difference. First operand 168 states and 195 transitions. Second operand 9 states. [2020-08-19 05:48:15,610 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:16,737 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:17,023 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:17,290 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:17,545 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:18,389 INFO L93 Difference]: Finished difference Result 495 states and 636 transitions. [2020-08-19 05:48:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 05:48:18,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-19 05:48:18,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:18,395 INFO L225 Difference]: With dead ends: 495 [2020-08-19 05:48:18,395 INFO L226 Difference]: Without dead ends: 355 [2020-08-19 05:48:18,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 05:48:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-08-19 05:48:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 284. [2020-08-19 05:48:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-08-19 05:48:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 330 transitions. [2020-08-19 05:48:18,494 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 330 transitions. Word has length 78 [2020-08-19 05:48:18,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:18,494 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 330 transitions. [2020-08-19 05:48:18,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:48:18,494 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 330 transitions. [2020-08-19 05:48:18,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 05:48:18,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:18,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:48:18,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:48:18,497 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:18,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:18,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1734675892, now seen corresponding path program 1 times [2020-08-19 05:48:18,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:18,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750439262] [2020-08-19 05:48:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,763 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:18,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:48:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:48:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:48:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:48:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:48:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-19 05:48:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 05:48:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:18,930 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 05:48:18,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750439262] [2020-08-19 05:48:18,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:18,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 05:48:18,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505418529] [2020-08-19 05:48:18,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:48:18,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:18,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:48:18,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:48:18,934 INFO L87 Difference]: Start difference. First operand 284 states and 330 transitions. Second operand 10 states. [2020-08-19 05:48:19,295 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:20,361 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:20,609 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:20,902 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:21,176 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:21,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:21,866 INFO L93 Difference]: Finished difference Result 646 states and 813 transitions. [2020-08-19 05:48:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 05:48:21,866 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-08-19 05:48:21,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:21,871 INFO L225 Difference]: With dead ends: 646 [2020-08-19 05:48:21,872 INFO L226 Difference]: Without dead ends: 390 [2020-08-19 05:48:21,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-19 05:48:21,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-08-19 05:48:21,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 283. [2020-08-19 05:48:21,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-08-19 05:48:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 327 transitions. [2020-08-19 05:48:21,941 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 327 transitions. Word has length 82 [2020-08-19 05:48:21,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:21,941 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 327 transitions. [2020-08-19 05:48:21,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:48:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 327 transitions. [2020-08-19 05:48:21,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 05:48:21,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:21,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:48:21,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:48:21,944 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:21,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:21,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1892436078, now seen corresponding path program 1 times [2020-08-19 05:48:21,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:21,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054393348] [2020-08-19 05:48:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,209 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:22,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:48:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:48:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:48:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:48:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:48:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 05:48:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:48:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:22,342 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 05:48:22,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054393348] [2020-08-19 05:48:22,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:22,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 05:48:22,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808765990] [2020-08-19 05:48:22,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:48:22,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:22,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:48:22,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:48:22,345 INFO L87 Difference]: Start difference. First operand 283 states and 327 transitions. Second operand 10 states. [2020-08-19 05:48:23,487 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:23,727 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:48:23,976 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:24,230 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:25,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:25,038 INFO L93 Difference]: Finished difference Result 649 states and 823 transitions. [2020-08-19 05:48:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:48:25,039 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-19 05:48:25,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:25,043 INFO L225 Difference]: With dead ends: 649 [2020-08-19 05:48:25,043 INFO L226 Difference]: Without dead ends: 394 [2020-08-19 05:48:25,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:48:25,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-08-19 05:48:25,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 293. [2020-08-19 05:48:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-19 05:48:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 337 transitions. [2020-08-19 05:48:25,119 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 337 transitions. Word has length 83 [2020-08-19 05:48:25,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:25,119 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 337 transitions. [2020-08-19 05:48:25,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:48:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 337 transitions. [2020-08-19 05:48:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 05:48:25,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:25,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:48:25,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:48:25,122 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:25,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:25,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1016327824, now seen corresponding path program 1 times [2020-08-19 05:48:25,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:25,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034889909] [2020-08-19 05:48:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,383 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:25,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:48:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:48:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:48:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:48:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:48:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 05:48:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:48:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,520 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 05:48:25,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034889909] [2020-08-19 05:48:25,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:25,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:48:25,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936968419] [2020-08-19 05:48:25,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:48:25,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:25,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:48:25,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:48:25,526 INFO L87 Difference]: Start difference. First operand 293 states and 337 transitions. Second operand 12 states. [2020-08-19 05:48:25,995 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:26,230 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:26,453 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:27,099 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:27,348 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:27,597 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:28,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:28,540 INFO L93 Difference]: Finished difference Result 673 states and 863 transitions. [2020-08-19 05:48:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:48:28,541 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-19 05:48:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:28,545 INFO L225 Difference]: With dead ends: 673 [2020-08-19 05:48:28,545 INFO L226 Difference]: Without dead ends: 408 [2020-08-19 05:48:28,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 05:48:28,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-08-19 05:48:28,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 301. [2020-08-19 05:48:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-08-19 05:48:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 345 transitions. [2020-08-19 05:48:28,620 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 345 transitions. Word has length 83 [2020-08-19 05:48:28,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:28,621 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 345 transitions. [2020-08-19 05:48:28,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:48:28,621 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 345 transitions. [2020-08-19 05:48:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 05:48:28,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:28,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:48:28,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:48:28,627 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:28,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1094962545, now seen corresponding path program 1 times [2020-08-19 05:48:28,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:28,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853259561] [2020-08-19 05:48:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:28,935 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:28,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:28,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:28,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:28,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:28,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:28,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:28,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:48:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:28,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:48:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:48:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:48:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:48:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 05:48:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:48:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,067 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 05:48:29,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853259561] [2020-08-19 05:48:29,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:29,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:48:29,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397475947] [2020-08-19 05:48:29,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:48:29,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:29,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:48:29,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:48:29,070 INFO L87 Difference]: Start difference. First operand 301 states and 345 transitions. Second operand 8 states. [2020-08-19 05:48:29,620 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:30,144 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:31,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:31,970 INFO L93 Difference]: Finished difference Result 972 states and 1282 transitions. [2020-08-19 05:48:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 05:48:31,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-19 05:48:31,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:31,977 INFO L225 Difference]: With dead ends: 972 [2020-08-19 05:48:31,978 INFO L226 Difference]: Without dead ends: 699 [2020-08-19 05:48:31,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-08-19 05:48:31,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2020-08-19 05:48:32,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 567. [2020-08-19 05:48:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-08-19 05:48:32,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 673 transitions. [2020-08-19 05:48:32,109 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 673 transitions. Word has length 83 [2020-08-19 05:48:32,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:32,111 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 673 transitions. [2020-08-19 05:48:32,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:48:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 673 transitions. [2020-08-19 05:48:32,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 05:48:32,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:32,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:48:32,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:48:32,115 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:32,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:32,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1057623401, now seen corresponding path program 1 times [2020-08-19 05:48:32,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:32,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317443001] [2020-08-19 05:48:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,396 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:32,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:48:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:48:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:48:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:48:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:48:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:48:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 05:48:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 05:48:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:32,504 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 05:48:32,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317443001] [2020-08-19 05:48:32,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:32,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:48:32,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937617128] [2020-08-19 05:48:32,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:48:32,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:32,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:48:32,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:48:32,507 INFO L87 Difference]: Start difference. First operand 567 states and 673 transitions. Second operand 8 states. [2020-08-19 05:48:33,076 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:35,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:35,263 INFO L93 Difference]: Finished difference Result 1114 states and 1455 transitions. [2020-08-19 05:48:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 05:48:35,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-08-19 05:48:35,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:35,274 INFO L225 Difference]: With dead ends: 1114 [2020-08-19 05:48:35,275 INFO L226 Difference]: Without dead ends: 1111 [2020-08-19 05:48:35,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2020-08-19 05:48:35,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2020-08-19 05:48:35,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 919. [2020-08-19 05:48:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-08-19 05:48:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1098 transitions. [2020-08-19 05:48:35,505 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1098 transitions. Word has length 87 [2020-08-19 05:48:35,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:35,506 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1098 transitions. [2020-08-19 05:48:35,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:48:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1098 transitions. [2020-08-19 05:48:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-19 05:48:35,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:35,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:48:35,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:48:35,511 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:35,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:35,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2007066912, now seen corresponding path program 1 times [2020-08-19 05:48:35,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:35,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217928025] [2020-08-19 05:48:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:48:35,607 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:48:35,607 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:48:35,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:48:35,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:48:35 BoogieIcfgContainer [2020-08-19 05:48:35,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:48:35,662 INFO L168 Benchmark]: Toolchain (without parser) took 31874.48 ms. Allocated memory was 136.8 MB in the beginning and 647.5 MB in the end (delta: 510.7 MB). Free memory was 98.6 MB in the beginning and 111.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 497.7 MB. Max. memory is 7.1 GB. [2020-08-19 05:48:35,663 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:48:35,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.51 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 98.4 MB in the beginning and 167.2 MB in the end (delta: -68.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-08-19 05:48:35,670 INFO L168 Benchmark]: Boogie Preprocessor took 87.54 ms. Allocated memory is still 199.8 MB. Free memory was 167.2 MB in the beginning and 162.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-19 05:48:35,673 INFO L168 Benchmark]: RCFGBuilder took 1166.11 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 162.9 MB in the beginning and 196.0 MB in the end (delta: -33.1 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:48:35,675 INFO L168 Benchmark]: TraceAbstraction took 29962.73 ms. Allocated memory was 228.1 MB in the beginning and 647.5 MB in the end (delta: 419.4 MB). Free memory was 194.5 MB in the beginning and 111.6 MB in the end (delta: 83.0 MB). Peak memory consumption was 502.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:48:35,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.51 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 98.4 MB in the beginning and 167.2 MB in the end (delta: -68.8 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.54 ms. Allocated memory is still 199.8 MB. Free memory was 167.2 MB in the beginning and 162.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1166.11 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 162.9 MB in the beginning and 196.0 MB in the end (delta: -33.1 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29962.73 ms. Allocated memory was 228.1 MB in the beginning and 647.5 MB in the end (delta: 419.4 MB). Free memory was 194.5 MB in the beginning and 111.6 MB in the end (delta: 83.0 MB). Peak memory consumption was 502.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 284]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L179] int cleanupTimeShifts = 4; [L292] int pumpRunning = 0; [L293] int systemActive = 1; [L679] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L876] int methAndRunningLastTime ; [L257] int retValue_acc ; [L258] int tmp ; [L262] FCALL select_helpers() [L263] FCALL select_features() [L264] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L264] RET, EXPR valid_product() [L264] tmp = valid_product() [L266] COND TRUE \read(tmp) [L268] FCALL setup() [L269] CALL runTest() [L250] CALL __utac_acc__Specification2_spec__1() [L881] methAndRunningLastTime = 0 [L250] RET __utac_acc__Specification2_spec__1() [L251] CALL test() [L446] int splverifierCounter ; [L447] int tmp ; [L448] int tmp___0 ; [L449] int tmp___1 ; [L450] int tmp___2 ; [L453] splverifierCounter = 0 [L455] COND TRUE 1 [L457] COND TRUE splverifierCounter < 4 [L463] tmp = __VERIFIER_nondet_int() [L465] COND TRUE \read(tmp) [L467] CALL waterRise() [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 [L467] RET waterRise() [L473] tmp___0 = __VERIFIER_nondet_int() [L475] COND TRUE \read(tmp___0) [L477] CALL changeMethaneLevel() [L115] COND FALSE !(\read(methaneLevelCritical)) [L118] methaneLevelCritical = 1 [L477] RET changeMethaneLevel() [L483] tmp___2 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___2) [L498] CALL timeShift() [L300] COND FALSE !(\read(pumpRunning)) [L307] COND TRUE \read(systemActive) [L309] CALL processEnvironment() [L329] int tmp ; [L332] COND TRUE ! pumpRunning [L334] CALL, EXPR isHighWaterLevel() [L426] int retValue_acc ; [L427] int tmp ; [L428] int tmp___0 ; [L432] CALL, EXPR isHighWaterSensorDry() [L165] int retValue_acc ; [L168] COND FALSE !(waterLevel < 2) [L172] retValue_acc = 0 [L173] return (retValue_acc); [L432] RET, EXPR isHighWaterSensorDry() [L432] tmp = isHighWaterSensorDry() [L434] COND FALSE !(\read(tmp)) [L437] tmp___0 = 1 [L439] retValue_acc = tmp___0 [L440] return (retValue_acc); [L334] RET, EXPR isHighWaterLevel() [L334] tmp = isHighWaterLevel() [L336] COND TRUE \read(tmp) [L338] CALL activatePump() [L357] pumpRunning = 1 [L338] RET activatePump() [L309] RET processEnvironment() [L315] CALL __utac_acc__Specification2_spec__2() [L886] int tmp ; [L887] int tmp___0 ; [L891] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L891] RET, EXPR isMethaneLevelCritical() [L891] tmp = isMethaneLevelCritical() [L893] COND TRUE \read(tmp) [L895] CALL, EXPR isPumpRunning() [L381] int retValue_acc ; [L384] retValue_acc = pumpRunning [L385] return (retValue_acc); [L895] RET, EXPR isPumpRunning() [L895] tmp___0 = isPumpRunning() [L897] COND TRUE \read(tmp___0) [L898] COND FALSE !(\read(methAndRunningLastTime)) [L903] methAndRunningLastTime = 1 [L315] RET __utac_acc__Specification2_spec__2() [L498] RET timeShift() [L455] COND TRUE 1 [L457] COND TRUE splverifierCounter < 4 [L463] tmp = __VERIFIER_nondet_int() [L465] COND FALSE !(\read(tmp)) [L473] tmp___0 = __VERIFIER_nondet_int() [L475] COND FALSE !(\read(tmp___0)) [L483] tmp___2 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___2) [L498] CALL timeShift() [L300] COND TRUE \read(pumpRunning) [L302] CALL lowerWaterLevel() [L91] COND TRUE waterLevel > 0 [L92] waterLevel = waterLevel - 1 [L302] RET lowerWaterLevel() [L307] COND TRUE \read(systemActive) [L309] CALL processEnvironment() [L329] int tmp ; [L332] COND FALSE !(! pumpRunning) [L347] FCALL processEnvironment__wrappee__base() [L309] RET processEnvironment() [L315] CALL __utac_acc__Specification2_spec__2() [L886] int tmp ; [L887] int tmp___0 ; [L891] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L891] RET, EXPR isMethaneLevelCritical() [L891] tmp = isMethaneLevelCritical() [L893] COND TRUE \read(tmp) [L895] CALL, EXPR isPumpRunning() [L381] int retValue_acc ; [L384] retValue_acc = pumpRunning [L385] return (retValue_acc); [L895] RET, EXPR isPumpRunning() [L895] tmp___0 = isPumpRunning() [L897] COND TRUE \read(tmp___0) [L898] COND TRUE \read(methAndRunningLastTime) [L900] CALL __automaton_fail() [L284] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 220 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.8s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 24.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 971 SDtfs, 2411 SDslu, 1137 SDs, 0 SdLazy, 4888 SolverSat, 1530 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 413 GetRequests, 259 SyntacticMatches, 3 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=919occurred 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: 0.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 841 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 848 NumberOfCodeBlocks, 848 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 709 ConstructedInterpolants, 0 QuantifiedInterpolants, 223096 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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...