/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=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:04:04,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:04:04,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:04:04,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:04:04,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:04:04,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:04:04,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:04:04,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:04:04,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:04:04,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:04:04,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:04:04,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:04:04,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:04:04,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:04:04,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:04:04,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:04:04,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:04:04,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:04:04,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:04:04,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:04:04,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:04:04,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:04:04,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:04:04,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:04:04,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:04:04,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:04:04,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:04:04,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:04:04,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:04:04,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:04:04,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:04:04,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:04:04,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:04:04,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:04:04,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:04:04,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:04:04,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:04:04,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:04:04,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:04:04,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:04:04,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:04:04,492 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 05:04:04,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:04:04,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:04:04,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:04:04,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:04:04,538 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:04:04,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:04:04,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:04:04,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:04:04,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:04:04,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:04:04,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:04:04,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:04:04,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:04:04,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:04:04,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:04:04,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:04:04,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:04:04,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:04:04,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:04:04,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:04:04,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:04:04,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:04:04,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:04:04,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:04:04,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:04:04,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:04:04,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:04:04,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:04:04,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:04:04,544 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=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:04:04,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:04:04,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:04:04,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:04:04,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:04:04,834 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:04:04,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-19 05:04:04,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50f6a16b4/85dbf34bb42e44a78ef7defc91d802ca/FLAG8ab428935 [2020-08-19 05:04:05,381 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:04:05,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-19 05:04:05,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50f6a16b4/85dbf34bb42e44a78ef7defc91d802ca/FLAG8ab428935 [2020-08-19 05:04:05,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50f6a16b4/85dbf34bb42e44a78ef7defc91d802ca [2020-08-19 05:04:05,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:04:05,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:04:05,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:04:05,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:04:05,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:04:05,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:04:05" (1/1) ... [2020-08-19 05:04:05,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17979b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:05, skipping insertion in model container [2020-08-19 05:04:05,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:04:05" (1/1) ... [2020-08-19 05:04:05,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:04:05,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:04:06,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:04:06,213 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:04:06,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:04:06,384 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:04:06,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:06 WrapperNode [2020-08-19 05:04:06,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:04:06,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:04:06,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:04:06,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:04:06,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:06" (1/1) ... [2020-08-19 05:04:06,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:06" (1/1) ... [2020-08-19 05:04:06,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:06" (1/1) ... [2020-08-19 05:04:06,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:06" (1/1) ... [2020-08-19 05:04:06,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:06" (1/1) ... [2020-08-19 05:04:06,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:06" (1/1) ... [2020-08-19 05:04:06,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:06" (1/1) ... [2020-08-19 05:04:06,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:04:06,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:04:06,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:04:06,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:04:06,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:06" (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 05:04:06,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:04:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:04:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:04:06,580 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:04:06,580 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:04:06,580 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:04:06,580 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 05:04:06,580 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:04:06,581 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 05:04:06,582 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:04:06,582 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:04:06,582 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:04:06,582 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:04:06,583 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:04:06,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:04:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:04:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:04:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:04:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:04:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:04:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:04:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:04:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 05:04:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:04:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:04:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:04:06,586 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:04:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:04:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:04:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:04:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:04:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:04:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:04:06,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:04:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:04:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:04:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:04:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:04:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:04:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:04:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:04:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:04:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:04:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:04:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:04:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:04:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:04:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:04:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:04:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:04:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:04:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:04:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:04:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:04:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:04:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 05:04:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:04:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:04:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:04:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 05:04:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:04:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 05:04:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:04:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:04:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:04:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:04:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:04:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:04:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:04:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:04:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:04:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:04:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:04:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:04:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:04:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:04:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:04:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:04:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:04:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:04:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:04:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:04:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:04:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:04:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:04:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:04:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:04:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:04:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:04:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:04:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:04:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:04:07,688 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:04:07,688 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:04:07,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:04:07 BoogieIcfgContainer [2020-08-19 05:04:07,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:04:07,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:04:07,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:04:07,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:04:07,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:04:05" (1/3) ... [2020-08-19 05:04:07,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b8279d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:04:07, skipping insertion in model container [2020-08-19 05:04:07,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:06" (2/3) ... [2020-08-19 05:04:07,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b8279d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:04:07, skipping insertion in model container [2020-08-19 05:04:07,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:04:07" (3/3) ... [2020-08-19 05:04:07,702 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2020-08-19 05:04:07,713 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:04:07,721 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:04:07,735 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:04:07,761 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:04:07,761 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:04:07,762 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:04:07,762 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:04:07,762 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:04:07,762 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:04:07,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:04:07,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:04:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-19 05:04:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 05:04:07,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:07,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:07,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:07,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:07,804 INFO L82 PathProgramCache]: Analyzing trace with hash 261309835, now seen corresponding path program 1 times [2020-08-19 05:04:07,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:07,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427833123] [2020-08-19 05:04:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:08,454 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:08,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:08,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:08,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:08,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:04:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:08,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:04:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:08,566 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 05:04:08,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427833123] [2020-08-19 05:04:08,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:08,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:04:08,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359275920] [2020-08-19 05:04:08,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:04:08,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:08,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:04:08,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:04:08,605 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-19 05:04:09,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:09,787 INFO L93 Difference]: Finished difference Result 309 states and 402 transitions. [2020-08-19 05:04:09,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:04:09,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 05:04:09,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:09,805 INFO L225 Difference]: With dead ends: 309 [2020-08-19 05:04:09,805 INFO L226 Difference]: Without dead ends: 167 [2020-08-19 05:04:09,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:04:09,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-19 05:04:09,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 133. [2020-08-19 05:04:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-19 05:04:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2020-08-19 05:04:09,930 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 46 [2020-08-19 05:04:09,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:09,933 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2020-08-19 05:04:09,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:04:09,933 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2020-08-19 05:04:09,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 05:04:09,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:09,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:09,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:04:09,946 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:09,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:09,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1021856254, now seen corresponding path program 1 times [2020-08-19 05:04:09,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:09,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689370851] [2020-08-19 05:04:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:10,345 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:10,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:10,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:10,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:10,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:10,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:04:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:10,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:04:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:10,383 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 05:04:10,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689370851] [2020-08-19 05:04:10,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:10,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:04:10,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602501341] [2020-08-19 05:04:10,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:04:10,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:10,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:04:10,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:04:10,386 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 4 states. [2020-08-19 05:04:10,794 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:11,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:11,649 INFO L93 Difference]: Finished difference Result 242 states and 293 transitions. [2020-08-19 05:04:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:04:11,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 05:04:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:11,653 INFO L225 Difference]: With dead ends: 242 [2020-08-19 05:04:11,653 INFO L226 Difference]: Without dead ends: 151 [2020-08-19 05:04:11,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:04:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-19 05:04:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-19 05:04:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-19 05:04:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-19 05:04:11,691 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 47 [2020-08-19 05:04:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:11,691 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-19 05:04:11,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:04:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-19 05:04:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 05:04:11,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:11,694 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 05:04:11,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:04:11,694 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:11,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:11,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1136847733, now seen corresponding path program 1 times [2020-08-19 05:04:11,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:11,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112509817] [2020-08-19 05:04:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:12,062 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:12,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:12,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:12,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:12,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:12,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:04:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:12,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:04:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:12,156 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 05:04:12,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112509817] [2020-08-19 05:04:12,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:12,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:04:12,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805582058] [2020-08-19 05:04:12,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:04:12,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:12,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:04:12,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:04:12,161 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 8 states. [2020-08-19 05:04:12,517 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:12,825 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:13,108 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:13,343 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:14,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:14,559 INFO L93 Difference]: Finished difference Result 251 states and 307 transitions. [2020-08-19 05:04:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:04:14,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 05:04:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:14,562 INFO L225 Difference]: With dead ends: 251 [2020-08-19 05:04:14,563 INFO L226 Difference]: Without dead ends: 151 [2020-08-19 05:04:14,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:14,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-19 05:04:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-19 05:04:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-19 05:04:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-19 05:04:14,602 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 51 [2020-08-19 05:04:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:14,602 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-19 05:04:14,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:04:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-19 05:04:14,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 05:04:14,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:14,605 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 05:04:14,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:04:14,605 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:14,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:14,606 INFO L82 PathProgramCache]: Analyzing trace with hash -629251764, now seen corresponding path program 1 times [2020-08-19 05:04:14,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:14,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498873813] [2020-08-19 05:04:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:14,919 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:14,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:14,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:14,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:04:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:14,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:15,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:15,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 05:04:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 05:04:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:15,025 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 05:04:15,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498873813] [2020-08-19 05:04:15,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:15,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:04:15,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354908500] [2020-08-19 05:04:15,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:04:15,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:15,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:04:15,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:04:15,028 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 6 states. [2020-08-19 05:04:15,357 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:16,569 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:17,204 INFO L93 Difference]: Finished difference Result 351 states and 430 transitions. [2020-08-19 05:04:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:04:17,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-19 05:04:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:17,210 INFO L225 Difference]: With dead ends: 351 [2020-08-19 05:04:17,210 INFO L226 Difference]: Without dead ends: 251 [2020-08-19 05:04:17,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:04:17,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-19 05:04:17,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 210. [2020-08-19 05:04:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-19 05:04:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 237 transitions. [2020-08-19 05:04:17,257 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 237 transitions. Word has length 64 [2020-08-19 05:04:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:17,258 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 237 transitions. [2020-08-19 05:04:17,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:04:17,258 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 237 transitions. [2020-08-19 05:04:17,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 05:04:17,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:17,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:17,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:04:17,260 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:17,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:17,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1171048631, now seen corresponding path program 1 times [2020-08-19 05:04:17,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:17,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891805988] [2020-08-19 05:04:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,560 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:17,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:04:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 05:04:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 05:04:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:17,668 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 05:04:17,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891805988] [2020-08-19 05:04:17,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:17,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:04:17,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279905549] [2020-08-19 05:04:17,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:04:17,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:17,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:04:17,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:17,670 INFO L87 Difference]: Start difference. First operand 210 states and 237 transitions. Second operand 12 states. [2020-08-19 05:04:18,121 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:18,415 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:18,654 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:18,888 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:19,405 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:20,293 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:20,606 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:20,870 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:21,151 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:21,435 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:21,700 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:23,054 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:23,435 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:24,051 INFO L93 Difference]: Finished difference Result 739 states and 942 transitions. [2020-08-19 05:04:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 05:04:24,052 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-19 05:04:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:24,059 INFO L225 Difference]: With dead ends: 739 [2020-08-19 05:04:24,059 INFO L226 Difference]: Without dead ends: 553 [2020-08-19 05:04:24,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 05:04:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-08-19 05:04:24,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 495. [2020-08-19 05:04:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-19 05:04:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 577 transitions. [2020-08-19 05:04:24,162 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 577 transitions. Word has length 78 [2020-08-19 05:04:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:24,162 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 577 transitions. [2020-08-19 05:04:24,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:04:24,163 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 577 transitions. [2020-08-19 05:04:24,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 05:04:24,167 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:24,175 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, 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] [2020-08-19 05:04:24,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:04:24,175 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:24,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:24,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2053602902, now seen corresponding path program 1 times [2020-08-19 05:04:24,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:24,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310796116] [2020-08-19 05:04:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,488 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:24,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:04:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 05:04:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 05:04:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 05:04:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 05:04:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-19 05:04:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 05:04:24,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310796116] [2020-08-19 05:04:24,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:24,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 05:04:24,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109581176] [2020-08-19 05:04:24,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:04:24,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:24,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:04:24,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:04:24,768 INFO L87 Difference]: Start difference. First operand 495 states and 577 transitions. Second operand 11 states. [2020-08-19 05:04:25,341 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 05:04:25,848 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:27,584 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 05:04:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:29,080 INFO L93 Difference]: Finished difference Result 964 states and 1200 transitions. [2020-08-19 05:04:29,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 05:04:29,081 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-19 05:04:29,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:29,089 INFO L225 Difference]: With dead ends: 964 [2020-08-19 05:04:29,089 INFO L226 Difference]: Without dead ends: 610 [2020-08-19 05:04:29,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-08-19 05:04:29,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-19 05:04:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 571. [2020-08-19 05:04:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-19 05:04:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 684 transitions. [2020-08-19 05:04:29,206 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 684 transitions. Word has length 136 [2020-08-19 05:04:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:29,206 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 684 transitions. [2020-08-19 05:04:29,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:04:29,207 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 684 transitions. [2020-08-19 05:04:29,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-19 05:04:29,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:29,210 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:29,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:04:29,210 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:29,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:29,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1503231471, now seen corresponding path program 1 times [2020-08-19 05:04:29,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:29,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43983598] [2020-08-19 05:04:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,453 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:29,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:04:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:04:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 05:04:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:04:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:04:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 05:04:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 05:04:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 05:04:29,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43983598] [2020-08-19 05:04:29,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:29,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:04:29,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250300710] [2020-08-19 05:04:29,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:04:29,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:29,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:04:29,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:04:29,676 INFO L87 Difference]: Start difference. First operand 571 states and 684 transitions. Second operand 10 states. [2020-08-19 05:04:30,469 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:30,701 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:04:30,931 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:31,154 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:32,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:32,288 INFO L93 Difference]: Finished difference Result 1175 states and 1478 transitions. [2020-08-19 05:04:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:04:32,289 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-08-19 05:04:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:32,294 INFO L225 Difference]: With dead ends: 1175 [2020-08-19 05:04:32,295 INFO L226 Difference]: Without dead ends: 628 [2020-08-19 05:04:32,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:04:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-08-19 05:04:32,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 586. [2020-08-19 05:04:32,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-08-19 05:04:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 701 transitions. [2020-08-19 05:04:32,450 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 701 transitions. Word has length 141 [2020-08-19 05:04:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:32,450 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 701 transitions. [2020-08-19 05:04:32,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:04:32,450 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 701 transitions. [2020-08-19 05:04:32,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-19 05:04:32,453 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:32,453 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:32,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:04:32,454 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:32,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1474731181, now seen corresponding path program 1 times [2020-08-19 05:04:32,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:32,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843608546] [2020-08-19 05:04:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,722 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:04:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:04:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 05:04:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:04:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:04:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 05:04:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 05:04:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 05:04:32,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843608546] [2020-08-19 05:04:32,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:32,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:04:32,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989106433] [2020-08-19 05:04:32,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:04:32,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:32,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:04:32,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:32,900 INFO L87 Difference]: Start difference. First operand 586 states and 701 transitions. Second operand 12 states. [2020-08-19 05:04:33,375 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:33,603 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:33,838 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:34,380 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:34,632 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:34,865 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:35,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:35,859 INFO L93 Difference]: Finished difference Result 1061 states and 1310 transitions. [2020-08-19 05:04:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:04:35,860 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 141 [2020-08-19 05:04:35,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:35,866 INFO L225 Difference]: With dead ends: 1061 [2020-08-19 05:04:35,866 INFO L226 Difference]: Without dead ends: 499 [2020-08-19 05:04:35,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:04:35,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-08-19 05:04:36,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 475. [2020-08-19 05:04:36,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-08-19 05:04:36,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 565 transitions. [2020-08-19 05:04:36,009 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 565 transitions. Word has length 141 [2020-08-19 05:04:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:36,009 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 565 transitions. [2020-08-19 05:04:36,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:04:36,009 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 565 transitions. [2020-08-19 05:04:36,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-19 05:04:36,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:36,013 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:36,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:04:36,013 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:36,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:36,014 INFO L82 PathProgramCache]: Analyzing trace with hash -339330766, now seen corresponding path program 1 times [2020-08-19 05:04:36,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:36,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727907698] [2020-08-19 05:04:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,314 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:36,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:04:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:04:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 05:04:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 05:04:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:04:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 05:04:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 05:04:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-19 05:04:36,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727907698] [2020-08-19 05:04:36,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:36,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 05:04:36,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839325958] [2020-08-19 05:04:36,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:04:36,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:36,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:04:36,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:04:36,743 INFO L87 Difference]: Start difference. First operand 475 states and 565 transitions. Second operand 15 states. [2020-08-19 05:04:37,263 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:37,923 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:38,787 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:39,090 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:39,360 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:39,634 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:39,959 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:40,226 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:40,757 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 05:04:41,248 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 05:04:42,087 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:42,309 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:42,573 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:42,831 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:43,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:43,585 INFO L93 Difference]: Finished difference Result 1250 states and 1546 transitions. [2020-08-19 05:04:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 05:04:43,589 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 145 [2020-08-19 05:04:43,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:43,594 INFO L225 Difference]: With dead ends: 1250 [2020-08-19 05:04:43,595 INFO L226 Difference]: Without dead ends: 799 [2020-08-19 05:04:43,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 05:04:43,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-08-19 05:04:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 760. [2020-08-19 05:04:43,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-19 05:04:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 889 transitions. [2020-08-19 05:04:43,761 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 889 transitions. Word has length 145 [2020-08-19 05:04:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:43,763 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 889 transitions. [2020-08-19 05:04:43,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:04:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 889 transitions. [2020-08-19 05:04:43,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 05:04:43,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:43,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:43,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:04:43,767 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:43,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:43,767 INFO L82 PathProgramCache]: Analyzing trace with hash 929993430, now seen corresponding path program 1 times [2020-08-19 05:04:43,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:43,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485143731] [2020-08-19 05:04:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,081 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:44,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:04:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:04:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 05:04:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 05:04:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 05:04:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:04:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 05:04:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 05:04:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-19 05:04:44,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485143731] [2020-08-19 05:04:44,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:44,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 05:04:44,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217385590] [2020-08-19 05:04:44,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:04:44,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:44,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:04:44,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:04:44,276 INFO L87 Difference]: Start difference. First operand 760 states and 889 transitions. Second operand 11 states. [2020-08-19 05:04:44,628 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:46,376 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:46,607 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:46,868 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:47,136 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:47,375 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:47,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:47,804 INFO L93 Difference]: Finished difference Result 888 states and 1101 transitions. [2020-08-19 05:04:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 05:04:47,805 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 149 [2020-08-19 05:04:47,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:47,811 INFO L225 Difference]: With dead ends: 888 [2020-08-19 05:04:47,811 INFO L226 Difference]: Without dead ends: 885 [2020-08-19 05:04:47,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-08-19 05:04:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-19 05:04:47,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 760. [2020-08-19 05:04:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-19 05:04:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 886 transitions. [2020-08-19 05:04:47,952 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 886 transitions. Word has length 149 [2020-08-19 05:04:47,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:47,952 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 886 transitions. [2020-08-19 05:04:47,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:04:47,953 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 886 transitions. [2020-08-19 05:04:47,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 05:04:47,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:47,955 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:47,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:04:47,956 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:47,956 INFO L82 PathProgramCache]: Analyzing trace with hash 432107741, now seen corresponding path program 1 times [2020-08-19 05:04:47,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:47,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558038602] [2020-08-19 05:04:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,282 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:04:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:04:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 05:04:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 05:04:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 05:04:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 05:04:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 05:04:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 05:04:48,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558038602] [2020-08-19 05:04:48,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:48,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:04:48,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104774545] [2020-08-19 05:04:48,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:04:48,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:04:48,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:48,516 INFO L87 Difference]: Start difference. First operand 760 states and 886 transitions. Second operand 12 states. [2020-08-19 05:04:48,867 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:49,410 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:50,179 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:50,444 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:50,679 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:50,897 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:51,162 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:51,412 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:52,589 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:53,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:53,270 INFO L93 Difference]: Finished difference Result 1786 states and 2220 transitions. [2020-08-19 05:04:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 05:04:53,271 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2020-08-19 05:04:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:53,279 INFO L225 Difference]: With dead ends: 1786 [2020-08-19 05:04:53,279 INFO L226 Difference]: Without dead ends: 1168 [2020-08-19 05:04:53,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-19 05:04:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-19 05:04:53,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1022. [2020-08-19 05:04:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-08-19 05:04:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1207 transitions. [2020-08-19 05:04:53,506 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1207 transitions. Word has length 149 [2020-08-19 05:04:53,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:53,507 INFO L479 AbstractCegarLoop]: Abstraction has 1022 states and 1207 transitions. [2020-08-19 05:04:53,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:04:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1207 transitions. [2020-08-19 05:04:53,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-19 05:04:53,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:53,511 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 05:04:53,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:04:53,511 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:53,512 INFO L82 PathProgramCache]: Analyzing trace with hash -706947900, now seen corresponding path program 2 times [2020-08-19 05:04:53,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:53,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804452194] [2020-08-19 05:04:53,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:04:53,588 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:04:53,588 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:04:53,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 05:04:53,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:04:53 BoogieIcfgContainer [2020-08-19 05:04:53,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:04:53,659 INFO L168 Benchmark]: Toolchain (without parser) took 47978.72 ms. Allocated memory was 138.9 MB in the beginning and 733.5 MB in the end (delta: 594.5 MB). Free memory was 101.7 MB in the beginning and 155.7 MB in the end (delta: -54.0 MB). Peak memory consumption was 540.5 MB. Max. memory is 7.1 GB. [2020-08-19 05:04:53,661 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:04:53,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.61 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 171.9 MB in the end (delta: -70.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:04:53,662 INFO L168 Benchmark]: Boogie Preprocessor took 100.46 ms. Allocated memory is still 202.9 MB. Free memory was 171.9 MB in the beginning and 167.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:04:53,667 INFO L168 Benchmark]: RCFGBuilder took 1207.34 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 167.7 MB in the beginning and 198.2 MB in the end (delta: -30.6 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:04:53,668 INFO L168 Benchmark]: TraceAbstraction took 45961.20 ms. Allocated memory was 234.9 MB in the beginning and 733.5 MB in the end (delta: 498.6 MB). Free memory was 198.2 MB in the beginning and 155.7 MB in the end (delta: 42.5 MB). Peak memory consumption was 541.1 MB. Max. memory is 7.1 GB. [2020-08-19 05:04:53,676 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 704.61 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 171.9 MB in the end (delta: -70.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.46 ms. Allocated memory is still 202.9 MB. Free memory was 171.9 MB in the beginning and 167.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1207.34 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 167.7 MB in the beginning and 198.2 MB in the end (delta: -30.6 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45961.20 ms. Allocated memory was 234.9 MB in the beginning and 733.5 MB in the end (delta: 498.6 MB). Free memory was 198.2 MB in the beginning and 155.7 MB in the end (delta: 42.5 MB). Peak memory consumption was 541.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 317]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L117] int pumpRunning = 0; [L118] int systemActive = 1; [L491] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L715] int cleanupTimeShifts = 4; [L814] int waterLevel = 1; [L815] int methaneLevelCritical = 0; [L791] int retValue_acc ; [L792] int tmp ; [L796] FCALL select_helpers() [L797] FCALL select_features() [L798] CALL, EXPR valid_product() [L934] int retValue_acc ; [L937] retValue_acc = 1 [L938] return (retValue_acc); [L798] RET, EXPR valid_product() [L798] tmp = valid_product() [L800] COND TRUE \read(tmp) [L802] FCALL setup() [L803] CALL runTest() [L782] CALL test() [L45] int splverifierCounter ; [L46] int tmp ; [L47] int tmp___0 ; [L48] int tmp___1 ; [L49] int tmp___2 ; [L52] splverifierCounter = 0 [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND TRUE \read(tmp) [L66] CALL waterRise() [L832] COND TRUE waterLevel < 2 [L833] waterLevel = waterLevel + 1 [L66] RET waterRise() [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND FALSE !(\read(pumpRunning)) [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND FALSE !(\read(pumpRunning)) [L198] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND TRUE ! pumpRunning [L159] CALL, EXPR isHighWaterLevel() [L294] int retValue_acc ; [L295] int tmp ; [L296] int tmp___0 ; [L300] CALL, EXPR isHighWaterSensorDry() [L894] int retValue_acc ; [L897] COND FALSE !(waterLevel < 2) [L901] retValue_acc = 0 [L902] return (retValue_acc); [L300] RET, EXPR isHighWaterSensorDry() [L300] tmp = isHighWaterSensorDry() [L302] COND FALSE !(\read(tmp)) [L305] tmp___0 = 1 [L307] retValue_acc = tmp___0 [L308] return (retValue_acc); [L159] RET, EXPR isHighWaterLevel() [L159] tmp = isHighWaterLevel() [L161] COND TRUE \read(tmp) [L163] CALL activatePump() [L213] int tmp ; [L217] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L217] RET, EXPR isMethaneAlarm() [L217] tmp = isMethaneAlarm() [L219] COND FALSE !(\read(tmp)) [L223] CALL activatePump__wrappee__highWaterSensor() [L208] pumpRunning = 1 [L223] RET activatePump__wrappee__highWaterSensor() [L163] RET activatePump() [L198] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) [L140] RET __utac_acc__Specification4_spec__1() [L97] RET timeShift() [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND TRUE \read(pumpRunning) [L127] CALL lowerWaterLevel() [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L127] RET lowerWaterLevel() [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L185] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] RET, EXPR isMethaneAlarm() [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L193] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L172] FCALL processEnvironment__wrappee__base() [L193] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) [L140] RET __utac_acc__Specification4_spec__1() [L97] RET timeShift() [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND TRUE \read(pumpRunning) [L127] CALL lowerWaterLevel() [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L127] RET lowerWaterLevel() [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L185] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] RET, EXPR isMethaneAlarm() [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L193] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L172] FCALL processEnvironment__wrappee__base() [L193] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND TRUE tmp == 0 [L699] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L699] RET, EXPR isPumpRunning() [L699] tmp___0 = isPumpRunning() [L701] COND TRUE \read(tmp___0) [L703] CALL __automaton_fail() [L317] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 45.8s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 38.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1432 SDtfs, 4039 SDslu, 1685 SDs, 0 SdLazy, 9675 SolverSat, 2673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 415 SyntacticMatches, 7 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 18.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1022occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 602 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1347 NumberOfCodeBlocks, 1347 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1136 ConstructedInterpolants, 0 QuantifiedInterpolants, 433066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 184/214 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...