/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:37:32,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:37:32,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:37:32,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:37:32,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:37:32,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:37:32,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:37:32,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:37:32,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:37:32,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:37:32,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:37:32,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:37:32,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:37:32,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:37:32,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:37:32,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:37:32,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:37:32,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:37:32,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:37:32,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:37:32,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:37:32,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:37:32,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:37:32,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:37:32,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:37:32,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:37:32,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:37:32,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:37:32,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:37:32,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:37:32,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:37:32,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:37:32,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:37:32,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:37:32,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:37:32,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:37:32,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:37:32,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:37:32,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:37:32,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:37:32,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:37:32,384 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 23:37:32,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:37:32,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:37:32,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:37:32,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:37:32,408 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:37:32,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:37:32,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:37:32,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:37:32,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:37:32,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:37:32,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:37:32,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:37:32,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:37:32,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:37:32,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:37:32,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:37:32,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:37:32,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:37:32,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:37:32,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:37:32,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:37:32,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:37:32,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:37:32,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:37:32,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:37:32,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:37:32,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:37:32,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:37:32,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:37:32,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:37:32,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:37:32,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:37:32,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:37:32,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:37:32,760 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:37:32,760 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-08-21 23:37:32,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c493dea54/1ba09593f243466c9ef259689c5900d8/FLAGcb5de1b38 [2020-08-21 23:37:33,368 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:37:33,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-08-21 23:37:33,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c493dea54/1ba09593f243466c9ef259689c5900d8/FLAGcb5de1b38 [2020-08-21 23:37:33,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c493dea54/1ba09593f243466c9ef259689c5900d8 [2020-08-21 23:37:33,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:37:33,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:37:33,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:37:33,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:37:33,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:37:33,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:37:33" (1/1) ... [2020-08-21 23:37:33,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2830e110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:33, skipping insertion in model container [2020-08-21 23:37:33,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:37:33" (1/1) ... [2020-08-21 23:37:33,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:37:33,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:37:34,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:37:34,211 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:37:34,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:37:34,371 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:37:34,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:34 WrapperNode [2020-08-21 23:37:34,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:37:34,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:37:34,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:37:34,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:37:34,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:34" (1/1) ... [2020-08-21 23:37:34,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:34" (1/1) ... [2020-08-21 23:37:34,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:34" (1/1) ... [2020-08-21 23:37:34,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:34" (1/1) ... [2020-08-21 23:37:34,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:34" (1/1) ... [2020-08-21 23:37:34,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:34" (1/1) ... [2020-08-21 23:37:34,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:34" (1/1) ... [2020-08-21 23:37:34,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:37:34,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:37:34,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:37:34,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:37:34,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:34" (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 23:37:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:37:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:37:34,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:37:34,536 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:37:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:37:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:37:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:37:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:37:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:37:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 23:37:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:37:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:37:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:37:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 23:37:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:37:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:37:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:37:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:37:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:37:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:37:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 23:37:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 23:37:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:37:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:37:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:37:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:37:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:37:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:37:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:37:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:37:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:37:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:37:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:37:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:37:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:37:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:37:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:37:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:37:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:37:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:37:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:37:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:37:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:37:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:37:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:37:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:37:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:37:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:37:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 23:37:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:37:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:37:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:37:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:37:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:37:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:37:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:37:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:37:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 23:37:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:37:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:37:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 23:37:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 23:37:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:37:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:37:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:37:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:37:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:37:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:37:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:37:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:37:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:37:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:37:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:37:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:37:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:37:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:37:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:37:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:37:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:37:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:37:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:37:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:37:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:37:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:37:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:37:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:37:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:37:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:37:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:37:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:37:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:37:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:37:35,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:37:35,596 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:37:35,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:37:35 BoogieIcfgContainer [2020-08-21 23:37:35,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:37:35,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:37:35,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:37:35,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:37:35,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:37:33" (1/3) ... [2020-08-21 23:37:35,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9c40ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:37:35, skipping insertion in model container [2020-08-21 23:37:35,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:34" (2/3) ... [2020-08-21 23:37:35,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9c40ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:37:35, skipping insertion in model container [2020-08-21 23:37:35,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:37:35" (3/3) ... [2020-08-21 23:37:35,610 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product23.cil.c [2020-08-21 23:37:35,621 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:37:35,630 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:37:35,645 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:37:35,677 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:37:35,677 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:37:35,677 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:37:35,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:37:35,678 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:37:35,678 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:37:35,678 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:37:35,678 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:37:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-21 23:37:35,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 23:37:35,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:35,730 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 23:37:35,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:35,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1512575049, now seen corresponding path program 1 times [2020-08-21 23:37:35,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:35,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792385846] [2020-08-21 23:37:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:36,400 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:36,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:36,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:36,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:37:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:36,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:37:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:36,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:37:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:36,513 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 23:37:36,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792385846] [2020-08-21 23:37:36,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:36,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:37:36,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048262899] [2020-08-21 23:37:36,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:37:36,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:36,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:37:36,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:37:36,546 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-21 23:37:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:37,803 INFO L93 Difference]: Finished difference Result 305 states and 403 transitions. [2020-08-21 23:37:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:37:37,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 23:37:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:37,822 INFO L225 Difference]: With dead ends: 305 [2020-08-21 23:37:37,822 INFO L226 Difference]: Without dead ends: 165 [2020-08-21 23:37:37,827 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 23:37:37,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-21 23:37:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-08-21 23:37:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 23:37:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-08-21 23:37:37,939 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 52 [2020-08-21 23:37:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:37,940 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-08-21 23:37:37,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:37:37,940 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-08-21 23:37:37,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 23:37:37,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:37,951 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 23:37:37,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:37:37,952 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:37,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:37,952 INFO L82 PathProgramCache]: Analyzing trace with hash -298039851, now seen corresponding path program 1 times [2020-08-21 23:37:37,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:37,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338829355] [2020-08-21 23:37:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:38,397 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:38,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:38,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:38,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:38,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:38,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:37:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:38,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:37:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:38,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:37:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:38,474 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 23:37:38,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338829355] [2020-08-21 23:37:38,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:38,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:37:38,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208886338] [2020-08-21 23:37:38,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:37:38,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:38,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:37:38,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:37:38,478 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 4 states. [2020-08-21 23:37:38,886 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:37:39,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:39,802 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2020-08-21 23:37:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:37:39,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 23:37:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:39,806 INFO L225 Difference]: With dead ends: 232 [2020-08-21 23:37:39,806 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 23:37:39,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:37:39,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 23:37:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 122. [2020-08-21 23:37:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-21 23:37:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2020-08-21 23:37:39,855 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 53 [2020-08-21 23:37:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:39,856 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2020-08-21 23:37:39,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:37:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2020-08-21 23:37:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 23:37:39,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:39,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:39,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:37:39,862 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:39,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1680590552, now seen corresponding path program 1 times [2020-08-21 23:37:39,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:39,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77161443] [2020-08-21 23:37:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:40,208 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:40,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:40,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:40,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:40,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:40,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:37:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:37:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:40,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 23:37:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:40,321 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 23:37:40,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77161443] [2020-08-21 23:37:40,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:40,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:37:40,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510191800] [2020-08-21 23:37:40,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:37:40,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:40,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:37:40,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:37:40,327 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 8 states. [2020-08-21 23:37:40,671 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:37:40,973 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:41,247 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:41,480 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:42,197 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:37:44,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:44,020 INFO L93 Difference]: Finished difference Result 424 states and 531 transitions. [2020-08-21 23:37:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:37:44,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 23:37:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:44,032 INFO L225 Difference]: With dead ends: 424 [2020-08-21 23:37:44,033 INFO L226 Difference]: Without dead ends: 326 [2020-08-21 23:37:44,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:37:44,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-21 23:37:44,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-21 23:37:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-21 23:37:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 327 transitions. [2020-08-21 23:37:44,103 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 327 transitions. Word has length 57 [2020-08-21 23:37:44,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:44,104 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 327 transitions. [2020-08-21 23:37:44,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:37:44,104 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 327 transitions. [2020-08-21 23:37:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 23:37:44,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:44,106 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 23:37:44,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:37:44,106 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:44,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:44,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1676229378, now seen corresponding path program 1 times [2020-08-21 23:37:44,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:44,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56721770] [2020-08-21 23:37:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:44,389 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:44,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:44,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:44,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:44,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:44,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:44,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:37:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:44,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:37:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:44,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 23:37:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:44,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 23:37:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:44,503 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 23:37:44,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56721770] [2020-08-21 23:37:44,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:44,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:37:44,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735927238] [2020-08-21 23:37:44,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:37:44,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:44,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:37:44,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:37:44,506 INFO L87 Difference]: Start difference. First operand 268 states and 327 transitions. Second operand 8 states. [2020-08-21 23:37:44,860 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:37:46,236 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:46,612 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:46,894 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:47,172 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:37:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:47,946 INFO L93 Difference]: Finished difference Result 824 states and 1085 transitions. [2020-08-21 23:37:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 23:37:47,952 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 23:37:47,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:47,960 INFO L225 Difference]: With dead ends: 824 [2020-08-21 23:37:47,963 INFO L226 Difference]: Without dead ends: 580 [2020-08-21 23:37:47,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:37:47,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-08-21 23:37:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 513. [2020-08-21 23:37:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-21 23:37:48,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 641 transitions. [2020-08-21 23:37:48,089 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 641 transitions. Word has length 63 [2020-08-21 23:37:48,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:48,090 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 641 transitions. [2020-08-21 23:37:48,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:37:48,090 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 641 transitions. [2020-08-21 23:37:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 23:37:48,093 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:48,093 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 23:37:48,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:37:48,094 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:48,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:48,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1477650020, now seen corresponding path program 1 times [2020-08-21 23:37:48,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:48,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519223848] [2020-08-21 23:37:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:37:48,146 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:37:48,147 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:37:48,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:37:48,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:37:48 BoogieIcfgContainer [2020-08-21 23:37:48,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:37:48,175 INFO L168 Benchmark]: Toolchain (without parser) took 14486.08 ms. Allocated memory was 146.8 MB in the beginning and 480.8 MB in the end (delta: 334.0 MB). Free memory was 101.7 MB in the beginning and 223.7 MB in the end (delta: -122.0 MB). Peak memory consumption was 212.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:48,176 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 23:37:48,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.52 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.5 MB in the beginning and 170.2 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:48,178 INFO L168 Benchmark]: Boogie Preprocessor took 89.30 ms. Allocated memory is still 202.9 MB. Free memory was 170.2 MB in the beginning and 166.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:48,179 INFO L168 Benchmark]: RCFGBuilder took 1138.19 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 166.1 MB in the beginning and 197.2 MB in the end (delta: -31.1 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:48,180 INFO L168 Benchmark]: TraceAbstraction took 12570.37 ms. Allocated memory was 236.5 MB in the beginning and 480.8 MB in the end (delta: 244.3 MB). Free memory was 195.8 MB in the beginning and 223.7 MB in the end (delta: -27.9 MB). Peak memory consumption was 216.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:48,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.52 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.5 MB in the beginning and 170.2 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.30 ms. Allocated memory is still 202.9 MB. Free memory was 170.2 MB in the beginning and 166.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1138.19 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 166.1 MB in the beginning and 197.2 MB in the end (delta: -31.1 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12570.37 ms. Allocated memory was 236.5 MB in the beginning and 480.8 MB in the end (delta: 244.3 MB). Free memory was 195.8 MB in the beginning and 223.7 MB in the end (delta: -27.9 MB). Peak memory consumption was 216.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 541]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L177] int pumpRunning = 0; [L178] int systemActive = 1; [L438] int cleanupTimeShifts = 4; [L715] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L514] int retValue_acc ; [L515] int tmp ; [L519] FCALL select_helpers() [L520] FCALL select_features() [L521] CALL, EXPR valid_product() [L938] int retValue_acc ; [L941] retValue_acc = 1 [L942] return (retValue_acc); [L521] RET, EXPR valid_product() [L521] tmp = valid_product() [L523] COND TRUE \read(tmp) [L525] FCALL setup() [L526] CALL runTest() [L505] CALL test() [L372] int splverifierCounter ; [L373] int tmp ; [L374] int tmp___0 ; [L375] int tmp___1 ; [L376] int tmp___2 ; [L379] splverifierCounter = 0 [L381] COND TRUE 1 [L383] COND TRUE splverifierCounter < 4 [L389] tmp = __VERIFIER_nondet_int() [L391] COND TRUE \read(tmp) [L393] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L393] RET waterRise() [L399] tmp___0 = __VERIFIER_nondet_int() [L401] COND FALSE !(\read(tmp___0)) [L409] tmp___2 = __VERIFIER_nondet_int() [L411] COND FALSE !(\read(tmp___2)) [L415] tmp___1 = __VERIFIER_nondet_int() [L417] COND TRUE \read(tmp___1) [L419] CALL stopSystem() [L358] COND FALSE !(\read(pumpRunning)) [L365] systemActive = 0 [L419] RET stopSystem() [L426] CALL timeShift() [L184] COND FALSE !(\read(pumpRunning)) [L191] COND FALSE !(\read(systemActive)) [L199] CALL __utac_acc__Specification3_spec__1() [L139] int tmp ; [L140] int tmp___0 ; [L141] int tmp___1 ; [L145] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L145] RET, EXPR isMethaneLevelCritical() [L145] tmp = isMethaneLevelCritical() [L147] COND FALSE !(\read(tmp)) [L151] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L151] RET, EXPR getWaterLevel() [L151] tmp___0 = getWaterLevel() [L153] COND TRUE tmp___0 == 2 [L155] CALL, EXPR isPumpRunning() [L291] int retValue_acc ; [L294] retValue_acc = pumpRunning [L295] return (retValue_acc); [L155] RET, EXPR isPumpRunning() [L155] tmp___1 = isPumpRunning() [L157] COND FALSE !(\read(tmp___1)) [L161] CALL __automaton_fail() [L541] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 233 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 496 SDtfs, 801 SDslu, 348 SDs, 0 SdLazy, 1919 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=513occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 186 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 61524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...