/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:13:24,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:13:24,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:13:24,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:13:24,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:13:24,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:13:24,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:13:24,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:13:24,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:13:24,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:13:24,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:13:24,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:13:24,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:13:24,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:13:24,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:13:24,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:13:24,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:13:24,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:13:24,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:13:24,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:13:24,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:13:24,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:13:24,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:13:24,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:13:24,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:13:24,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:13:24,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:13:24,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:13:24,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:13:24,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:13:24,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:13:24,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:13:24,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:13:24,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:13:24,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:13:24,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:13:24,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:13:24,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:13:24,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:13:24,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:13:24,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:13:24,436 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:13:24,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:13:24,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:13:24,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:13:24,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:13:24,477 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:13:24,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:13:24,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:13:24,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:13:24,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:13:24,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:13:24,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:13:24,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:13:24,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:13:24,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:13:24,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:13:24,480 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:13:24,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:13:24,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:13:24,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:13:24,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:13:24,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:13:24,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:13:24,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:13:24,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:13:24,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:13:24,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:13:24,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:13:24,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:13:24,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:13:24,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:13:24,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:13:24,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:13:24,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:13:24,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:13:24,812 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:13:24,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2020-08-19 04:13:24,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81c5476e2/1c26da7c039a4b2bb4245bddf4e62cf3/FLAG9ee0d3b0e [2020-08-19 04:13:25,413 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:13:25,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2020-08-19 04:13:25,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81c5476e2/1c26da7c039a4b2bb4245bddf4e62cf3/FLAG9ee0d3b0e [2020-08-19 04:13:25,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81c5476e2/1c26da7c039a4b2bb4245bddf4e62cf3 [2020-08-19 04:13:25,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:13:25,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:13:25,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:13:25,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:13:25,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:13:25,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:13:25" (1/1) ... [2020-08-19 04:13:25,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e77f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:25, skipping insertion in model container [2020-08-19 04:13:25,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:13:25" (1/1) ... [2020-08-19 04:13:25,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:13:25,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:13:26,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:13:26,353 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:13:26,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:13:26,502 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:13:26,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:26 WrapperNode [2020-08-19 04:13:26,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:13:26,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:13:26,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:13:26,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:13:26,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:26" (1/1) ... [2020-08-19 04:13:26,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:26" (1/1) ... [2020-08-19 04:13:26,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:26" (1/1) ... [2020-08-19 04:13:26,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:26" (1/1) ... [2020-08-19 04:13:26,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:26" (1/1) ... [2020-08-19 04:13:26,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:26" (1/1) ... [2020-08-19 04:13:26,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:26" (1/1) ... [2020-08-19 04:13:26,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:13:26,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:13:26,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:13:26,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:13:26,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:13:26,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:13:26,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:13:26,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:13:26,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:13:26,655 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:13:26,655 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:13:26,655 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:13:26,656 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:13:26,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 04:13:26,656 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:13:26,656 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:13:26,656 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:13:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:13:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:13:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:13:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:13:26,657 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:13:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:13:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 04:13:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:13:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:13:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:13:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:13:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:13:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:13:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:13:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:13:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 04:13:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 04:13:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:13:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:13:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:13:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:13:26,660 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:13:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:13:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:13:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:13:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:13:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:13:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:13:26,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:13:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:13:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:13:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:13:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:13:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:13:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:13:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:13:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:13:26,662 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:13:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:13:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:13:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 04:13:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:13:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:13:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:13:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:13:26,663 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:13:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:13:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:13:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:13:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:13:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:13:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 04:13:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 04:13:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:13:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:13:26,664 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:13:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 04:13:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:13:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:13:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:13:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:13:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:13:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:13:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:13:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:13:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:13:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:13:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:13:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:13:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:13:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:13:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:13:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:13:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:13:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:13:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:13:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:13:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:13:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:13:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:13:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:13:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:13:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:13:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:13:27,828 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:13:27,829 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:13:27,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:13:27 BoogieIcfgContainer [2020-08-19 04:13:27,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:13:27,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:13:27,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:13:27,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:13:27,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:13:25" (1/3) ... [2020-08-19 04:13:27,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25827c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:13:27, skipping insertion in model container [2020-08-19 04:13:27,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:13:26" (2/3) ... [2020-08-19 04:13:27,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25827c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:13:27, skipping insertion in model container [2020-08-19 04:13:27,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:13:27" (3/3) ... [2020-08-19 04:13:27,843 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product48.cil.c [2020-08-19 04:13:27,854 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:13:27,863 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:13:27,877 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:13:27,907 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:13:27,907 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:13:27,908 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:13:27,908 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:13:27,908 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:13:27,908 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:13:27,909 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:13:27,910 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:13:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-19 04:13:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:13:27,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:27,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:13:27,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:27,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:27,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1986683117, now seen corresponding path program 1 times [2020-08-19 04:13:27,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:27,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801680056] [2020-08-19 04:13:27,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:28,721 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:28,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:28,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:28,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:28,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:28,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:13:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:28,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:13:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:28,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:13:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:28,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801680056] [2020-08-19 04:13:28,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:28,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:13:28,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452349908] [2020-08-19 04:13:28,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:13:28,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:28,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:13:28,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:13:28,902 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2020-08-19 04:13:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:30,177 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-08-19 04:13:30,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:13:30,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 04:13:30,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:30,194 INFO L225 Difference]: With dead ends: 338 [2020-08-19 04:13:30,195 INFO L226 Difference]: Without dead ends: 183 [2020-08-19 04:13:30,200 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 [2020-08-19 04:13:30,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-19 04:13:30,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2020-08-19 04:13:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-19 04:13:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-19 04:13:30,308 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2020-08-19 04:13:30,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:30,309 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-19 04:13:30,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:13:30,309 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-19 04:13:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 04:13:30,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:30,320 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] [2020-08-19 04:13:30,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:13:30,321 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:30,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:30,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1294331280, now seen corresponding path program 1 times [2020-08-19 04:13:30,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:30,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120208406] [2020-08-19 04:13:30,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,716 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:30,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:13:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:13:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:13:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:30,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120208406] [2020-08-19 04:13:30,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:30,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:13:30,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500305290] [2020-08-19 04:13:30,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:13:30,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:30,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:13:30,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:13:30,766 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 4 states. [2020-08-19 04:13:31,167 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:32,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:32,183 INFO L93 Difference]: Finished difference Result 261 states and 320 transitions. [2020-08-19 04:13:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:13:32,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 04:13:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:32,188 INFO L225 Difference]: With dead ends: 261 [2020-08-19 04:13:32,189 INFO L226 Difference]: Without dead ends: 167 [2020-08-19 04:13:32,191 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 [2020-08-19 04:13:32,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-19 04:13:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 137. [2020-08-19 04:13:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-19 04:13:32,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 161 transitions. [2020-08-19 04:13:32,253 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 161 transitions. Word has length 53 [2020-08-19 04:13:32,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:32,254 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 161 transitions. [2020-08-19 04:13:32,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:13:32,254 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 161 transitions. [2020-08-19 04:13:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 04:13:32,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:32,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:13:32,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:13:32,257 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:32,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:32,257 INFO L82 PathProgramCache]: Analyzing trace with hash 89991443, now seen corresponding path program 1 times [2020-08-19 04:13:32,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:32,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751025586] [2020-08-19 04:13:32,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,566 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:32,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:13:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:13:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:13:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:32,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751025586] [2020-08-19 04:13:32,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:32,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:13:32,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097042400] [2020-08-19 04:13:32,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:13:32,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:32,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:13:32,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:13:32,650 INFO L87 Difference]: Start difference. First operand 137 states and 161 transitions. Second operand 8 states. [2020-08-19 04:13:33,007 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:33,356 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:33,606 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:33,842 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:34,560 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:13:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:36,647 INFO L93 Difference]: Finished difference Result 476 states and 591 transitions. [2020-08-19 04:13:36,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:13:36,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 04:13:36,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:36,655 INFO L225 Difference]: With dead ends: 476 [2020-08-19 04:13:36,655 INFO L226 Difference]: Without dead ends: 363 [2020-08-19 04:13:36,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:13:36,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-08-19 04:13:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 294. [2020-08-19 04:13:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-19 04:13:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 357 transitions. [2020-08-19 04:13:36,762 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 357 transitions. Word has length 58 [2020-08-19 04:13:36,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:36,763 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 357 transitions. [2020-08-19 04:13:36,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:13:36,763 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 357 transitions. [2020-08-19 04:13:36,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 04:13:36,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:36,765 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] [2020-08-19 04:13:36,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:13:36,766 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:36,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1771452602, now seen corresponding path program 1 times [2020-08-19 04:13:36,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:36,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232027783] [2020-08-19 04:13:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:37,054 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:13:37,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:13:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:37,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:13:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:37,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:13:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:37,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:13:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:37,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:13:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:37,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:13:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:37,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:13:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 04:13:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:37,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 04:13:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:13:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:13:37,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232027783] [2020-08-19 04:13:37,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:13:37,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:13:37,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564560738] [2020-08-19 04:13:37,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:13:37,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:13:37,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:13:37,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:13:37,167 INFO L87 Difference]: Start difference. First operand 294 states and 357 transitions. Second operand 8 states. [2020-08-19 04:13:37,501 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:38,867 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:39,232 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:39,518 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:13:39,744 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:13:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:40,694 INFO L93 Difference]: Finished difference Result 913 states and 1199 transitions. [2020-08-19 04:13:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 04:13:40,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 04:13:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:40,702 INFO L225 Difference]: With dead ends: 913 [2020-08-19 04:13:40,702 INFO L226 Difference]: Without dead ends: 643 [2020-08-19 04:13:40,705 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 [2020-08-19 04:13:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-08-19 04:13:40,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 569. [2020-08-19 04:13:40,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-08-19 04:13:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 703 transitions. [2020-08-19 04:13:40,876 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 703 transitions. Word has length 63 [2020-08-19 04:13:40,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:40,877 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 703 transitions. [2020-08-19 04:13:40,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:13:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 703 transitions. [2020-08-19 04:13:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 04:13:40,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:13:40,880 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] [2020-08-19 04:13:40,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:13:40,881 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:13:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:13:40,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1282483756, now seen corresponding path program 1 times [2020-08-19 04:13:40,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:13:40,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562044080] [2020-08-19 04:13:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:13:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:13:40,941 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:13:40,941 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:13:40,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:13:40,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:13:40 BoogieIcfgContainer [2020-08-19 04:13:40,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:13:40,970 INFO L168 Benchmark]: Toolchain (without parser) took 15200.16 ms. Allocated memory was 140.0 MB in the beginning and 483.4 MB in the end (delta: 343.4 MB). Free memory was 102.1 MB in the beginning and 419.2 MB in the end (delta: -317.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:40,971 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:13:40,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.74 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 168.4 MB in the end (delta: -66.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:40,973 INFO L168 Benchmark]: Boogie Preprocessor took 94.96 ms. Allocated memory is still 203.4 MB. Free memory was 168.4 MB in the beginning and 164.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:40,974 INFO L168 Benchmark]: RCFGBuilder took 1235.72 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 164.4 MB in the beginning and 194.2 MB in the end (delta: -29.8 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:40,975 INFO L168 Benchmark]: TraceAbstraction took 13133.16 ms. Allocated memory was 236.5 MB in the beginning and 483.4 MB in the end (delta: 246.9 MB). Free memory was 192.8 MB in the beginning and 419.2 MB in the end (delta: -226.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:13:40,979 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.74 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 168.4 MB in the end (delta: -66.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.96 ms. Allocated memory is still 203.4 MB. Free memory was 168.4 MB in the beginning and 164.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1235.72 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 164.4 MB in the beginning and 194.2 MB in the end (delta: -29.8 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13133.16 ms. Allocated memory was 236.5 MB in the beginning and 483.4 MB in the end (delta: 246.9 MB). Free memory was 192.8 MB in the beginning and 419.2 MB in the end (delta: -226.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L129] int waterLevel = 1; [L130] int methaneLevelCritical = 0; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L447] int cleanupTimeShifts = 4; [L782] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L521] int retValue_acc ; [L522] int tmp ; [L526] FCALL select_helpers() [L527] FCALL select_features() [L528] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L528] RET, EXPR valid_product() [L528] tmp = valid_product() [L530] COND TRUE \read(tmp) [L532] FCALL setup() [L533] CALL runTest() [L515] CALL test() [L545] int splverifierCounter ; [L546] int tmp ; [L547] int tmp___0 ; [L548] int tmp___1 ; [L549] int tmp___2 ; [L552] splverifierCounter = 0 [L554] COND TRUE 1 [L556] COND TRUE splverifierCounter < 4 [L562] tmp = __VERIFIER_nondet_int() [L564] COND TRUE \read(tmp) [L566] CALL waterRise() [L147] COND TRUE waterLevel < 2 [L148] waterLevel = waterLevel + 1 [L566] RET waterRise() [L572] tmp___0 = __VERIFIER_nondet_int() [L574] COND FALSE !(\read(tmp___0)) [L582] tmp___2 = __VERIFIER_nondet_int() [L584] COND FALSE !(\read(tmp___2)) [L590] tmp___1 = __VERIFIER_nondet_int() [L592] COND TRUE \read(tmp___1) [L594] CALL stopSystem() [L427] COND FALSE !(\read(pumpRunning)) [L434] systemActive = 0 [L594] RET stopSystem() [L601] CALL timeShift() [L236] COND FALSE !(\read(pumpRunning)) [L243] COND FALSE !(\read(systemActive)) [L251] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L168] int retValue_acc ; [L171] retValue_acc = methaneLevelCritical [L172] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L200] int retValue_acc ; [L203] retValue_acc = waterLevel [L204] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L360] int retValue_acc ; [L363] retValue_acc = pumpRunning [L364] return (retValue_acc); [L107] RET, EXPR isPumpRunning() [L107] tmp___1 = isPumpRunning() [L109] COND FALSE !(\read(tmp___1)) [L113] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 558 SDtfs, 890 SDslu, 393 SDs, 0 SdLazy, 2136 SolverSat, 558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred 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: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 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...