/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=SMALLESTAMONGWIDE --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 [2020-08-22 05:18:02,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:18:02,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:18:02,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:18:02,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:18:02,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:18:02,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:18:02,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:18:02,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:18:02,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:18:02,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:18:02,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:18:02,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:18:02,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:18:02,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:18:02,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:18:02,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:18:02,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:18:02,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:18:02,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:18:02,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:18:02,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:18:02,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:18:02,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:18:02,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:18:02,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:18:02,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:18:02,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:18:02,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:18:02,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:18:02,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:18:02,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:18:02,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:18:02,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:18:02,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:18:02,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:18:02,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:18:02,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:18:02,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:18:02,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:18:02,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:18:02,402 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 [2020-08-22 05:18:02,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:18:02,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:18:02,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:18:02,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:18:02,427 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:18:02,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:18:02,427 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:18:02,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:18:02,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:18:02,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:18:02,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:18:02,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:18:02,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:18:02,429 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:18:02,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:18:02,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:18:02,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:18:02,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:18:02,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:18:02,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:18:02,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:18:02,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:18:02,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:18:02,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:18:02,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:18:02,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:18:02,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:18:02,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:18:02,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:18:02,432 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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:18:02,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:18:02,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:18:02,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:18:02,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:18:02,784 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:18:02,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-08-22 05:18:02,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a02b54aa4/3f6002b7b175410096c0afbb48fac185/FLAG4db12c0ee [2020-08-22 05:18:03,367 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:18:03,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-08-22 05:18:03,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a02b54aa4/3f6002b7b175410096c0afbb48fac185/FLAG4db12c0ee [2020-08-22 05:18:03,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a02b54aa4/3f6002b7b175410096c0afbb48fac185 [2020-08-22 05:18:03,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:18:03,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:18:03,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:18:03,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:18:03,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:18:03,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:18:03" (1/1) ... [2020-08-22 05:18:03,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694adced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:03, skipping insertion in model container [2020-08-22 05:18:03,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:18:03" (1/1) ... [2020-08-22 05:18:03,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:18:03,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:18:04,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:18:04,179 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:18:04,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:18:04,402 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:18:04,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:04 WrapperNode [2020-08-22 05:18:04,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:18:04,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:18:04,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:18:04,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:18:04,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:04" (1/1) ... [2020-08-22 05:18:04,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:04" (1/1) ... [2020-08-22 05:18:04,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:04" (1/1) ... [2020-08-22 05:18:04,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:04" (1/1) ... [2020-08-22 05:18:04,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:04" (1/1) ... [2020-08-22 05:18:04,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:04" (1/1) ... [2020-08-22 05:18:04,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:04" (1/1) ... [2020-08-22 05:18:04,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:18:04,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:18:04,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:18:04,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:18:04,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:18:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:18:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:18:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:18:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:18:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:18:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:18:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:18:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:18:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:18:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 05:18:04,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:18:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:18:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:18:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 05:18:04,614 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:18:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:18:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:18:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:18:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:18:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:18:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 05:18:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 05:18:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:18:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:18:04,617 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:18:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:18:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:18:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:18:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:18:04,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:18:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:18:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:18:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:18:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:18:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:18:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:18:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:18:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:18:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:18:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:18:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:18:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:18:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 05:18:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:18:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:18:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:18:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:18:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:18:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:18:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:18:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:18:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 05:18:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:18:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:18:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 05:18:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 05:18:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:18:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:18:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:18:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:18:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:18:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:18:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:18:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:18:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:18:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:18:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:18:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:18:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:18:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:18:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:18:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:18:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:18:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:18:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:18:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:18:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:18:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:18:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:18:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:18:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:18:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:18:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:18:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:18:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:18:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:18:05,681 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:18:05,682 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:18:05,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:18:05 BoogieIcfgContainer [2020-08-22 05:18:05,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:18:05,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:18:05,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:18:05,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:18:05,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:18:03" (1/3) ... [2020-08-22 05:18:05,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260dd9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:18:05, skipping insertion in model container [2020-08-22 05:18:05,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:04" (2/3) ... [2020-08-22 05:18:05,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260dd9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:18:05, skipping insertion in model container [2020-08-22 05:18:05,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:18:05" (3/3) ... [2020-08-22 05:18:05,696 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product23.cil.c [2020-08-22 05:18:05,706 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:18:05,715 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:18:05,727 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:18:05,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:18:05,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:18:05,750 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:18:05,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:18:05,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:18:05,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:18:05,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:18:05,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:18:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-22 05:18:05,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:18:05,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:05,786 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] [2020-08-22 05:18:05,787 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:05,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1512575049, now seen corresponding path program 1 times [2020-08-22 05:18:05,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:05,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73759994] [2020-08-22 05:18:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:06,490 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:06,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:06,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:06,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:06,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:06,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:06,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:18:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:18:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:06,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:18:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:06,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73759994] [2020-08-22 05:18:06,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:06,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:18:06,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275126079] [2020-08-22 05:18:06,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:18:06,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:06,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:18:06,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:18:06,619 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-22 05:18:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:07,844 INFO L93 Difference]: Finished difference Result 305 states and 403 transitions. [2020-08-22 05:18:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:18:07,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 05:18:07,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:07,863 INFO L225 Difference]: With dead ends: 305 [2020-08-22 05:18:07,863 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 05:18:07,868 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 [2020-08-22 05:18:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 05:18:07,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-08-22 05:18:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-22 05:18:07,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-08-22 05:18:07,966 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 52 [2020-08-22 05:18:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:07,966 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-08-22 05:18:07,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:18:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-08-22 05:18:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 05:18:07,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:07,971 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] [2020-08-22 05:18:07,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:18:07,972 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:07,972 INFO L82 PathProgramCache]: Analyzing trace with hash -298039851, now seen corresponding path program 1 times [2020-08-22 05:18:07,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:07,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93651285] [2020-08-22 05:18:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:08,357 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:08,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:08,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:08,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:18:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:08,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:18:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:18:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:08,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93651285] [2020-08-22 05:18:08,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:08,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:18:08,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160857279] [2020-08-22 05:18:08,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:18:08,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:08,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:18:08,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:18:08,409 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 4 states. [2020-08-22 05:18:08,829 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:09,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:09,730 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2020-08-22 05:18:09,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:18:09,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 05:18:09,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:09,733 INFO L225 Difference]: With dead ends: 232 [2020-08-22 05:18:09,733 INFO L226 Difference]: Without dead ends: 149 [2020-08-22 05:18:09,735 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 [2020-08-22 05:18:09,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-22 05:18:09,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 122. [2020-08-22 05:18:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-22 05:18:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2020-08-22 05:18:09,784 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 53 [2020-08-22 05:18:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:09,784 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2020-08-22 05:18:09,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:18:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2020-08-22 05:18:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 05:18:09,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:09,798 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] [2020-08-22 05:18:09,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:18:09,799 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:09,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1680590552, now seen corresponding path program 1 times [2020-08-22 05:18:09,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:09,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255601101] [2020-08-22 05:18:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:10,171 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:10,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:10,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:10,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:10,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:18:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:10,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:18:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:10,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:18:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:10,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255601101] [2020-08-22 05:18:10,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:10,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:18:10,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606001545] [2020-08-22 05:18:10,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:18:10,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:10,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:18:10,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:18:10,252 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 8 states. [2020-08-22 05:18:10,685 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:10,987 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:11,289 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:11,519 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:12,232 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:14,084 INFO L93 Difference]: Finished difference Result 424 states and 531 transitions. [2020-08-22 05:18:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:18:14,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 05:18:14,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:14,095 INFO L225 Difference]: With dead ends: 424 [2020-08-22 05:18:14,095 INFO L226 Difference]: Without dead ends: 326 [2020-08-22 05:18:14,096 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 [2020-08-22 05:18:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-22 05:18:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-22 05:18:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-22 05:18:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 327 transitions. [2020-08-22 05:18:14,171 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 327 transitions. Word has length 57 [2020-08-22 05:18:14,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:14,172 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 327 transitions. [2020-08-22 05:18:14,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:18:14,172 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 327 transitions. [2020-08-22 05:18:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 05:18:14,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:14,174 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] [2020-08-22 05:18:14,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:18:14,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:14,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1676229378, now seen corresponding path program 1 times [2020-08-22 05:18:14,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:14,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939464812] [2020-08-22 05:18:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:14,457 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:14,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:14,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:14,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:14,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:14,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:14,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:18:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:14,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:18:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:14,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:18:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:14,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 05:18:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:18:14,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939464812] [2020-08-22 05:18:14,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:14,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:18:14,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875892459] [2020-08-22 05:18:14,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:18:14,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:14,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:18:14,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:18:14,567 INFO L87 Difference]: Start difference. First operand 268 states and 327 transitions. Second operand 8 states. [2020-08-22 05:18:14,965 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:16,304 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:16,684 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:16,942 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:17,202 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:17,907 INFO L93 Difference]: Finished difference Result 824 states and 1085 transitions. [2020-08-22 05:18:17,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:18:17,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 05:18:17,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:17,913 INFO L225 Difference]: With dead ends: 824 [2020-08-22 05:18:17,914 INFO L226 Difference]: Without dead ends: 580 [2020-08-22 05:18:17,916 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 [2020-08-22 05:18:17,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-08-22 05:18:18,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 513. [2020-08-22 05:18:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-22 05:18:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 641 transitions. [2020-08-22 05:18:18,046 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 641 transitions. Word has length 63 [2020-08-22 05:18:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:18,047 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 641 transitions. [2020-08-22 05:18:18,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:18:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 641 transitions. [2020-08-22 05:18:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 05:18:18,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:18,050 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] [2020-08-22 05:18:18,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:18:18,051 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:18,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1477650020, now seen corresponding path program 1 times [2020-08-22 05:18:18,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:18,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333361399] [2020-08-22 05:18:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:18:18,114 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:18:18,114 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:18:18,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:18:18,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:18:18 BoogieIcfgContainer [2020-08-22 05:18:18,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:18:18,154 INFO L168 Benchmark]: Toolchain (without parser) took 14455.55 ms. Allocated memory was 139.5 MB in the beginning and 503.3 MB in the end (delta: 363.9 MB). Free memory was 101.4 MB in the beginning and 341.5 MB in the end (delta: -240.2 MB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:18,156 INFO L168 Benchmark]: CDTParser took 0.75 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:18:18,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.65 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 172.2 MB in the end (delta: -71.1 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:18,166 INFO L168 Benchmark]: Boogie Preprocessor took 127.39 ms. Allocated memory is still 202.4 MB. Free memory was 172.2 MB in the beginning and 168.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:18,167 INFO L168 Benchmark]: RCFGBuilder took 1155.84 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 168.1 MB in the beginning and 198.7 MB in the end (delta: -30.6 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:18,168 INFO L168 Benchmark]: TraceAbstraction took 12463.64 ms. Allocated memory was 235.4 MB in the beginning and 503.3 MB in the end (delta: 267.9 MB). Free memory was 198.7 MB in the beginning and 341.5 MB in the end (delta: -142.8 MB). Peak memory consumption was 125.1 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:18,178 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.65 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 172.2 MB in the end (delta: -71.1 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.39 ms. Allocated memory is still 202.4 MB. Free memory was 172.2 MB in the beginning and 168.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1155.84 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 168.1 MB in the beginning and 198.7 MB in the end (delta: -30.6 MB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12463.64 ms. Allocated memory was 235.4 MB in the beginning and 503.3 MB in the end (delta: 267.9 MB). Free memory was 198.7 MB in the beginning and 341.5 MB in the end (delta: -142.8 MB). Peak memory consumption was 125.1 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: 12.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 495 SDtfs, 801 SDslu, 347 SDs, 0 SdLazy, 1915 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, 0.2s SatisfiabilityAnalysisTime, 1.6s 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...