/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:09:35,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:09:35,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:09:35,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:09:35,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:09:35,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:09:35,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:09:35,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:09:35,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:09:35,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:09:35,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:09:35,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:09:35,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:09:35,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:09:35,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:09:35,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:09:35,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:09:35,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:09:35,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:09:35,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:09:35,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:09:35,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:09:35,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:09:35,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:09:35,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:09:35,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:09:35,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:09:35,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:09:35,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:09:35,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:09:35,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:09:35,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:09:35,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:09:35,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:09:35,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:09:35,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:09:35,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:09:35,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:09:35,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:09:35,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:09:35,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:09:35,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:09:35,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:09:35,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:09:35,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:09:35,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:09:35,470 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:09:35,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:09:35,471 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:09:35,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:09:35,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:09:35,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:09:35,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:09:35,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:09:35,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:09:35,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:09:35,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:09:35,474 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:09:35,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:09:35,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:09:35,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:09:35,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:09:35,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:09:35,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:09:35,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:09:35,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:09:35,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:09:35,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:09:35,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:09:35,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:09:35,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:09:35,476 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 -> false [2020-08-21 13:09:35,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:09:35,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:09:35,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:09:35,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:09:35,781 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:09:35,781 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-08-21 13:09:35,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39b162715/827adf8773ab44bfb2c327e68f3d9770/FLAG0a27f13cf [2020-08-21 13:09:36,358 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:09:36,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-08-21 13:09:36,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39b162715/827adf8773ab44bfb2c327e68f3d9770/FLAG0a27f13cf [2020-08-21 13:09:36,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39b162715/827adf8773ab44bfb2c327e68f3d9770 [2020-08-21 13:09:36,719 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:09:36,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:09:36,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:09:36,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:09:36,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:09:36,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:09:36" (1/1) ... [2020-08-21 13:09:36,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:36, skipping insertion in model container [2020-08-21 13:09:36,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:09:36" (1/1) ... [2020-08-21 13:09:36,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:09:36,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:09:37,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:09:37,260 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:09:37,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:09:37,418 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:09:37,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:37 WrapperNode [2020-08-21 13:09:37,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:09:37,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:09:37,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:09:37,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:09:37,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:37" (1/1) ... [2020-08-21 13:09:37,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:37" (1/1) ... [2020-08-21 13:09:37,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:37" (1/1) ... [2020-08-21 13:09:37,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:37" (1/1) ... [2020-08-21 13:09:37,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:37" (1/1) ... [2020-08-21 13:09:37,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:37" (1/1) ... [2020-08-21 13:09:37,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:37" (1/1) ... [2020-08-21 13:09:37,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:09:37,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:09:37,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:09:37,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:09:37,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:09:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:09:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:09:37,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:09:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:09:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:09:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:09:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:09:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:09:37,650 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 13:09:37,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:09:37,651 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:09:37,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:09:37,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:09:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:09:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:09:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 13:09:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 13:09:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:09:37,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 13:09:37,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:09:37,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:09:37,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:09:37,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:09:37,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:09:37,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:09:37,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:09:37,654 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:09:37,654 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:09:37,654 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:09:37,654 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:09:37,655 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:09:37,655 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:09:37,655 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:09:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:09:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:09:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:09:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:09:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 13:09:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:09:37,656 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:09:37,657 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:09:37,657 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:09:37,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:09:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:09:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:09:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:09:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:09:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:09:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:09:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 13:09:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:09:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:09:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:09:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:09:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:09:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:09:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:09:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 13:09:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:09:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:09:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:09:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:09:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 13:09:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:09:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:09:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:09:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:09:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 13:09:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 13:09:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:09:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:09:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:09:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:09:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:09:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:09:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:09:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:09:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:09:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:09:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:09:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:09:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:09:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:09:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:09:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:09:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:09:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:09:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:09:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:09:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:09:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:09:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:09:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:09:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:09:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:09:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:09:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:09:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:09:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:09:37,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:09:38,751 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:09:38,751 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:09:38,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:09:38 BoogieIcfgContainer [2020-08-21 13:09:38,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:09:38,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:09:38,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:09:38,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:09:38,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:09:36" (1/3) ... [2020-08-21 13:09:38,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f870bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:09:38, skipping insertion in model container [2020-08-21 13:09:38,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:09:37" (2/3) ... [2020-08-21 13:09:38,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f870bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:09:38, skipping insertion in model container [2020-08-21 13:09:38,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:09:38" (3/3) ... [2020-08-21 13:09:38,765 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product60.cil.c [2020-08-21 13:09:38,776 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:09:38,784 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:09:38,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:09:38,824 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:09:38,824 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:09:38,824 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:09:38,824 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:09:38,824 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:09:38,825 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:09:38,825 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:09:38,825 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:09:38,851 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-08-21 13:09:38,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:09:38,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:38,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:09:38,864 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:38,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:38,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1529441714, now seen corresponding path program 1 times [2020-08-21 13:09:38,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:38,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503617188] [2020-08-21 13:09:38,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:39,628 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:39,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:39,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:39,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:39,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:39,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:39,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:09:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:39,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:09:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:39,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:09:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:09:39,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503617188] [2020-08-21 13:09:39,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:39,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:09:39,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612050538] [2020-08-21 13:09:39,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:09:39,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:39,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:09:39,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:09:39,769 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-08-21 13:09:41,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:41,072 INFO L93 Difference]: Finished difference Result 358 states and 461 transitions. [2020-08-21 13:09:41,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:09:41,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 13:09:41,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:41,099 INFO L225 Difference]: With dead ends: 358 [2020-08-21 13:09:41,099 INFO L226 Difference]: Without dead ends: 193 [2020-08-21 13:09:41,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:09:41,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-21 13:09:41,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2020-08-21 13:09:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-21 13:09:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2020-08-21 13:09:41,301 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 52 [2020-08-21 13:09:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:41,302 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2020-08-21 13:09:41,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:09:41,302 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2020-08-21 13:09:41,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 13:09:41,310 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:41,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:09:41,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:09:41,310 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:41,311 INFO L82 PathProgramCache]: Analyzing trace with hash 2080089166, now seen corresponding path program 1 times [2020-08-21 13:09:41,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:41,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263537202] [2020-08-21 13:09:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:41,644 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:41,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:41,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:41,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:41,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:41,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:41,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:09:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:09:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:09:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:09:41,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263537202] [2020-08-21 13:09:41,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:41,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:09:41,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002947986] [2020-08-21 13:09:41,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:09:41,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:41,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:09:41,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:09:41,693 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand 4 states. [2020-08-21 13:09:42,092 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:09:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:43,129 INFO L93 Difference]: Finished difference Result 281 states and 340 transitions. [2020-08-21 13:09:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:09:43,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 13:09:43,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:43,135 INFO L225 Difference]: With dead ends: 281 [2020-08-21 13:09:43,136 INFO L226 Difference]: Without dead ends: 177 [2020-08-21 13:09:43,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:09:43,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-21 13:09:43,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 147. [2020-08-21 13:09:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-21 13:09:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 171 transitions. [2020-08-21 13:09:43,182 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 171 transitions. Word has length 53 [2020-08-21 13:09:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:43,182 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 171 transitions. [2020-08-21 13:09:43,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:09:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 171 transitions. [2020-08-21 13:09:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 13:09:43,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:43,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:09:43,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:09:43,186 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:43,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:43,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1856420908, now seen corresponding path program 1 times [2020-08-21 13:09:43,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:43,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137576234] [2020-08-21 13:09:43,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,508 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:43,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:09:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:09:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:09:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:09:43,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137576234] [2020-08-21 13:09:43,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:43,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:09:43,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401420905] [2020-08-21 13:09:43,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:09:43,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:43,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:09:43,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:09:43,651 INFO L87 Difference]: Start difference. First operand 147 states and 171 transitions. Second operand 8 states. [2020-08-21 13:09:43,985 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:09:44,318 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:44,557 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:44,785 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:45,528 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:09:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:47,691 INFO L93 Difference]: Finished difference Result 506 states and 621 transitions. [2020-08-21 13:09:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:09:47,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 13:09:47,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:47,697 INFO L225 Difference]: With dead ends: 506 [2020-08-21 13:09:47,697 INFO L226 Difference]: Without dead ends: 383 [2020-08-21 13:09:47,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:09:47,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-21 13:09:47,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 314. [2020-08-21 13:09:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-08-21 13:09:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 377 transitions. [2020-08-21 13:09:47,776 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 377 transitions. Word has length 58 [2020-08-21 13:09:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:47,777 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 377 transitions. [2020-08-21 13:09:47,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:09:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 377 transitions. [2020-08-21 13:09:47,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 13:09:47,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:47,781 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] [2020-08-21 13:09:47,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:09:47,781 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:47,782 INFO L82 PathProgramCache]: Analyzing trace with hash 425111279, now seen corresponding path program 1 times [2020-08-21 13:09:47,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:47,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581081398] [2020-08-21 13:09:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:48,058 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:48,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:48,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:48,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:48,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:48,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:09:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:48,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:09:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:48,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 13:09:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 13:09:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:09:48,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581081398] [2020-08-21 13:09:48,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:48,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:09:48,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338192691] [2020-08-21 13:09:48,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:09:48,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:48,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:09:48,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:09:48,159 INFO L87 Difference]: Start difference. First operand 314 states and 377 transitions. Second operand 8 states. [2020-08-21 13:09:48,490 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:09:49,846 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:50,236 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:50,518 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:09:50,784 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:09:51,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:51,741 INFO L93 Difference]: Finished difference Result 973 states and 1259 transitions. [2020-08-21 13:09:51,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 13:09:51,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 13:09:51,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:51,751 INFO L225 Difference]: With dead ends: 973 [2020-08-21 13:09:51,751 INFO L226 Difference]: Without dead ends: 683 [2020-08-21 13:09:51,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:09:51,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-08-21 13:09:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 609. [2020-08-21 13:09:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-08-21 13:09:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 743 transitions. [2020-08-21 13:09:51,931 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 743 transitions. Word has length 63 [2020-08-21 13:09:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:51,931 INFO L479 AbstractCegarLoop]: Abstraction has 609 states and 743 transitions. [2020-08-21 13:09:51,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:09:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 743 transitions. [2020-08-21 13:09:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 13:09:51,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:51,937 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] [2020-08-21 13:09:51,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:09:51,937 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:51,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1458119221, now seen corresponding path program 1 times [2020-08-21 13:09:51,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:51,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489262605] [2020-08-21 13:09:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,230 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:09:52,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:09:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:09:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:09:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:09:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:09:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:09:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:09:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:09:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 13:09:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 13:09:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:09:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:09:52,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489262605] [2020-08-21 13:09:52,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:09:52,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:09:52,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243565119] [2020-08-21 13:09:52,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:09:52,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:09:52,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:09:52,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:09:52,316 INFO L87 Difference]: Start difference. First operand 609 states and 743 transitions. Second operand 6 states. [2020-08-21 13:09:52,593 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:09:54,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:09:54,565 INFO L93 Difference]: Finished difference Result 1435 states and 1848 transitions. [2020-08-21 13:09:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 13:09:54,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 13:09:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:09:54,573 INFO L225 Difference]: With dead ends: 1435 [2020-08-21 13:09:54,574 INFO L226 Difference]: Without dead ends: 850 [2020-08-21 13:09:54,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:09:54,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-21 13:09:54,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 777. [2020-08-21 13:09:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-08-21 13:09:54,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 940 transitions. [2020-08-21 13:09:54,751 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 940 transitions. Word has length 67 [2020-08-21 13:09:54,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:09:54,752 INFO L479 AbstractCegarLoop]: Abstraction has 777 states and 940 transitions. [2020-08-21 13:09:54,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:09:54,752 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 940 transitions. [2020-08-21 13:09:54,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 13:09:54,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:09:54,754 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] [2020-08-21 13:09:54,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:09:54,755 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:09:54,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:09:54,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1610113419, now seen corresponding path program 1 times [2020-08-21 13:09:54,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:09:54,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415213419] [2020-08-21 13:09:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:09:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:09:54,845 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:09:54,845 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:09:54,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:09:54,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:09:54 BoogieIcfgContainer [2020-08-21 13:09:54,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:09:54,873 INFO L168 Benchmark]: Toolchain (without parser) took 18152.70 ms. Allocated memory was 139.5 MB in the beginning and 529.5 MB in the end (delta: 390.1 MB). Free memory was 101.2 MB in the beginning and 476.2 MB in the end (delta: -375.0 MB). Peak memory consumption was 409.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:09:54,874 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 13:09:54,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.40 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 166.0 MB in the end (delta: -64.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:09:54,876 INFO L168 Benchmark]: Boogie Preprocessor took 156.61 ms. Allocated memory is still 202.9 MB. Free memory was 166.0 MB in the beginning and 161.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:09:54,877 INFO L168 Benchmark]: RCFGBuilder took 1178.72 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 161.9 MB in the beginning and 187.9 MB in the end (delta: -26.0 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:09:54,878 INFO L168 Benchmark]: TraceAbstraction took 16113.25 ms. Allocated memory was 235.9 MB in the beginning and 529.5 MB in the end (delta: 293.6 MB). Free memory was 187.9 MB in the beginning and 476.2 MB in the end (delta: -288.3 MB). Peak memory consumption was 400.1 MB. Max. memory is 7.1 GB. [2020-08-21 13:09:54,881 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 699.40 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 166.0 MB in the end (delta: -64.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.61 ms. Allocated memory is still 202.9 MB. Free memory was 166.0 MB in the beginning and 161.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1178.72 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 161.9 MB in the beginning and 187.9 MB in the end (delta: -26.0 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16113.25 ms. Allocated memory was 235.9 MB in the beginning and 529.5 MB in the end (delta: 293.6 MB). Free memory was 187.9 MB in the beginning and 476.2 MB in the end (delta: -288.3 MB). Peak memory consumption was 400.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 769]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L124] int pumpRunning = 0; [L125] int systemActive = 1; [L568] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L812] int waterLevel = 1; [L813] int methaneLevelCritical = 0; [L915] int cleanupTimeShifts = 4; [L988] int retValue_acc ; [L989] int tmp ; [L993] FCALL select_helpers() [L994] FCALL select_features() [L995] CALL, EXPR valid_product() [L803] int retValue_acc ; [L806] retValue_acc = 1 [L807] return (retValue_acc); [L995] RET, EXPR valid_product() [L995] tmp = valid_product() [L997] COND TRUE \read(tmp) [L999] FCALL setup() [L1000] CALL runTest() [L982] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L830] COND TRUE waterLevel < 2 [L831] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___1) [L96] CALL stopSystem() [L343] COND FALSE !(\read(pumpRunning)) [L350] systemActive = 0 [L96] RET stopSystem() [L103] CALL timeShift() [L132] COND FALSE !(\read(pumpRunning)) [L139] COND FALSE !(\read(systemActive)) [L147] CALL __utac_acc__Specification3_spec__1() [L366] int tmp ; [L367] int tmp___0 ; [L368] int tmp___1 ; [L372] CALL, EXPR isMethaneLevelCritical() [L851] int retValue_acc ; [L854] retValue_acc = methaneLevelCritical [L855] return (retValue_acc); [L372] RET, EXPR isMethaneLevelCritical() [L372] tmp = isMethaneLevelCritical() [L374] COND FALSE !(\read(tmp)) [L378] CALL, EXPR getWaterLevel() [L883] int retValue_acc ; [L886] retValue_acc = waterLevel [L887] return (retValue_acc); [L378] RET, EXPR getWaterLevel() [L378] tmp___0 = getWaterLevel() [L380] COND TRUE tmp___0 == 2 [L382] CALL, EXPR isPumpRunning() [L257] int retValue_acc ; [L260] retValue_acc = pumpRunning [L261] return (retValue_acc); [L382] RET, EXPR isPumpRunning() [L382] tmp___1 = isPumpRunning() [L384] COND FALSE !(\read(tmp___1)) [L388] CALL __automaton_fail() [L769] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 255 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 719 SDtfs, 1300 SDslu, 479 SDs, 0 SdLazy, 2649 SolverSat, 820 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=777occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 283 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...