/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=0.2 --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 03:40:50,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:40:50,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:40:50,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:40:50,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:40:50,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:40:50,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:40:50,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:40:50,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:40:50,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:40:50,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:40:50,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:40:50,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:40:50,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:40:50,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:40:50,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:40:50,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:40:50,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:40:50,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:40:50,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:40:50,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:40:50,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:40:50,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:40:50,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:40:50,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:40:50,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:40:50,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:40:50,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:40:50,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:40:50,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:40:50,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:40:50,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:40:50,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:40:50,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:40:50,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:40:50,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:40:50,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:40:50,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:40:50,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:40:50,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:40:50,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:40:50,315 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 03:40:50,356 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:40:50,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:40:50,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:40:50,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:40:50,359 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:40:50,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:40:50,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:40:50,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:40:50,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:40:50,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:40:50,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:40:50,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:40:50,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:40:50,362 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:40:50,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:40:50,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:40:50,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:40:50,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:40:50,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:40:50,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:40:50,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:40:50,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:40:50,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:40:50,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:40:50,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:40:50,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:40:50,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:40:50,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:40:50,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:40:50,365 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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-08-22 03:40:50,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:40:50,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:40:50,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:40:50,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:40:50,708 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:40:50,709 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-08-22 03:40:50,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07034edc7/b2091cd9519e4d1490c032853fad6768/FLAG1f5572a7d [2020-08-22 03:40:51,413 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:40:51,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-08-22 03:40:51,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07034edc7/b2091cd9519e4d1490c032853fad6768/FLAG1f5572a7d [2020-08-22 03:40:51,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07034edc7/b2091cd9519e4d1490c032853fad6768 [2020-08-22 03:40:51,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:40:51,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:40:51,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:40:51,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:40:51,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:40:51,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:40:51" (1/1) ... [2020-08-22 03:40:51,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2f3aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:51, skipping insertion in model container [2020-08-22 03:40:51,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:40:51" (1/1) ... [2020-08-22 03:40:51,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:40:51,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:40:52,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:40:52,315 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:40:52,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:40:52,428 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:40:52,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:52 WrapperNode [2020-08-22 03:40:52,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:40:52,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:40:52,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:40:52,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:40:52,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:52" (1/1) ... [2020-08-22 03:40:52,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:52" (1/1) ... [2020-08-22 03:40:52,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:52" (1/1) ... [2020-08-22 03:40:52,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:52" (1/1) ... [2020-08-22 03:40:52,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:52" (1/1) ... [2020-08-22 03:40:52,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:52" (1/1) ... [2020-08-22 03:40:52,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:52" (1/1) ... [2020-08-22 03:40:52,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:40:52,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:40:52,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:40:52,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:40:52,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:52" (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 03:40:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:40:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:40:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:40:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:40:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:40:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:40:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:40:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:40:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:40:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 03:40:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 03:40:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:40:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:40:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 03:40:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:40:52,650 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:40:52,650 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:40:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:40:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:40:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:40:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 03:40:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 03:40:52,651 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:40:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:40:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:40:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:40:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:40:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:40:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:40:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:40:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:40:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:40:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:40:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:40:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:40:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:40:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:40:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:40:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:40:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:40:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:40:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:40:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:40:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:40:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:40:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:40:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:40:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:40:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 03:40:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:40:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:40:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:40:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 03:40:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:40:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:40:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:40:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:40:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 03:40:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:40:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:40:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 03:40:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 03:40:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:40:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:40:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:40:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:40:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:40:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:40:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:40:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:40:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:40:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:40:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:40:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:40:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:40:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:40:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:40:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:40:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:40:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:40:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:40:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:40:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:40:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:40:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:40:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:40:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:40:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:40:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:40:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:40:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:40:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:40:53,709 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:40:53,709 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:40:53,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:40:53 BoogieIcfgContainer [2020-08-22 03:40:53,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:40:53,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:40:53,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:40:53,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:40:53,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:40:51" (1/3) ... [2020-08-22 03:40:53,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6314f510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:40:53, skipping insertion in model container [2020-08-22 03:40:53,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:52" (2/3) ... [2020-08-22 03:40:53,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6314f510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:40:53, skipping insertion in model container [2020-08-22 03:40:53,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:40:53" (3/3) ... [2020-08-22 03:40:53,727 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product23.cil.c [2020-08-22 03:40:53,738 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:40:53,746 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:40:53,760 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:40:53,786 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:40:53,786 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:40:53,787 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:40:53,787 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:40:53,787 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:40:53,787 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:40:53,787 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:40:53,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:40:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-22 03:40:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 03:40:53,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:53,824 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 03:40:53,825 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:53,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:53,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1512575049, now seen corresponding path program 1 times [2020-08-22 03:40:53,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:53,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028640009] [2020-08-22 03:40:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:54,551 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:40:54,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:54,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:54,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:54,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:54,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:54,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:40:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:54,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:40:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:54,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:40:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:54,641 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 03:40:54,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028640009] [2020-08-22 03:40:54,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:54,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:40:54,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616450883] [2020-08-22 03:40:54,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:40:54,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:54,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:40:54,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:40:54,678 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-22 03:40:55,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:55,905 INFO L93 Difference]: Finished difference Result 305 states and 403 transitions. [2020-08-22 03:40:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:40:55,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 03:40:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:55,923 INFO L225 Difference]: With dead ends: 305 [2020-08-22 03:40:55,923 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 03:40:55,929 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 03:40:55,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 03:40:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-08-22 03:40:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-22 03:40:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-08-22 03:40:56,077 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 52 [2020-08-22 03:40:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:56,077 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-08-22 03:40:56,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:40:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-08-22 03:40:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 03:40:56,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:56,091 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 03:40:56,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:40:56,091 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:56,092 INFO L82 PathProgramCache]: Analyzing trace with hash -298039851, now seen corresponding path program 1 times [2020-08-22 03:40:56,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:56,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250843424] [2020-08-22 03:40:56,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:56,458 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:40:56,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:56,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:56,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:40:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:56,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:40:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:56,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:40:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:56,504 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 03:40:56,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250843424] [2020-08-22 03:40:56,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:56,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:40:56,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787853114] [2020-08-22 03:40:56,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:40:56,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:56,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:40:56,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:40:56,508 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 4 states. [2020-08-22 03:40:56,907 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:57,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:57,802 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2020-08-22 03:40:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:40:57,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 03:40:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:57,806 INFO L225 Difference]: With dead ends: 232 [2020-08-22 03:40:57,806 INFO L226 Difference]: Without dead ends: 149 [2020-08-22 03:40:57,809 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 03:40:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-22 03:40:57,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 122. [2020-08-22 03:40:57,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-22 03:40:57,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2020-08-22 03:40:57,869 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 53 [2020-08-22 03:40:57,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:57,870 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2020-08-22 03:40:57,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:40:57,870 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2020-08-22 03:40:57,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 03:40:57,875 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:57,875 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 03:40:57,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:40:57,875 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:57,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1680590552, now seen corresponding path program 1 times [2020-08-22 03:40:57,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:57,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228565089] [2020-08-22 03:40:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:58,248 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:40:58,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:58,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:58,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:58,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:58,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:40:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:40:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:58,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 03:40:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:58,319 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 03:40:58,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228565089] [2020-08-22 03:40:58,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:58,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:40:58,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662650669] [2020-08-22 03:40:58,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:40:58,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:58,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:40:58,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:40:58,322 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 8 states. [2020-08-22 03:40:58,720 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:40:59,067 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:40:59,319 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:40:59,555 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:41:00,273 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:41:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:41:02,108 INFO L93 Difference]: Finished difference Result 424 states and 531 transitions. [2020-08-22 03:41:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:41:02,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 03:41:02,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:41:02,117 INFO L225 Difference]: With dead ends: 424 [2020-08-22 03:41:02,118 INFO L226 Difference]: Without dead ends: 326 [2020-08-22 03:41:02,121 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 03:41:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-22 03:41:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-22 03:41:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-22 03:41:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 327 transitions. [2020-08-22 03:41:02,209 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 327 transitions. Word has length 57 [2020-08-22 03:41:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:41:02,210 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 327 transitions. [2020-08-22 03:41:02,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:41:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 327 transitions. [2020-08-22 03:41:02,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 03:41:02,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:41:02,212 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 03:41:02,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:41:02,213 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:41:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:41:02,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1676229378, now seen corresponding path program 1 times [2020-08-22 03:41:02,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:41:02,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936093815] [2020-08-22 03:41:02,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:41:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:02,494 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:41:02,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:41:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:02,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:41:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:41:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:02,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:41:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:02,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:41:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:02,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:41:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:02,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:41:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:02,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 03:41:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 03:41:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:02,593 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 03:41:02,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936093815] [2020-08-22 03:41:02,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:41:02,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:41:02,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492833110] [2020-08-22 03:41:02,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:41:02,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:41:02,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:41:02,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:41:02,595 INFO L87 Difference]: Start difference. First operand 268 states and 327 transitions. Second operand 8 states. [2020-08-22 03:41:02,965 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:41:04,325 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:41:04,667 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:41:04,948 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:41:05,213 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:41:05,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:41:05,953 INFO L93 Difference]: Finished difference Result 824 states and 1085 transitions. [2020-08-22 03:41:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 03:41:05,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 03:41:05,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:41:05,962 INFO L225 Difference]: With dead ends: 824 [2020-08-22 03:41:05,963 INFO L226 Difference]: Without dead ends: 580 [2020-08-22 03:41:05,966 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 03:41:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-08-22 03:41:06,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 513. [2020-08-22 03:41:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-22 03:41:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 641 transitions. [2020-08-22 03:41:06,088 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 641 transitions. Word has length 63 [2020-08-22 03:41:06,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:41:06,089 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 641 transitions. [2020-08-22 03:41:06,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:41:06,089 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 641 transitions. [2020-08-22 03:41:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 03:41:06,092 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:41:06,092 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 03:41:06,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:41:06,093 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:41:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:41:06,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1477650020, now seen corresponding path program 1 times [2020-08-22 03:41:06,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:41:06,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541171757] [2020-08-22 03:41:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:41:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:41:06,147 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:41:06,147 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:41:06,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:41:06,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:41:06 BoogieIcfgContainer [2020-08-22 03:41:06,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:41:06,176 INFO L168 Benchmark]: Toolchain (without parser) took 14468.24 ms. Allocated memory was 141.0 MB in the beginning and 478.2 MB in the end (delta: 337.1 MB). Free memory was 102.9 MB in the beginning and 113.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 326.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:41:06,177 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 03:41:06,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.07 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 168.6 MB in the end (delta: -65.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:41:06,179 INFO L168 Benchmark]: Boogie Preprocessor took 122.11 ms. Allocated memory is still 203.9 MB. Free memory was 168.6 MB in the beginning and 164.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:41:06,180 INFO L168 Benchmark]: RCFGBuilder took 1166.40 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 164.1 MB in the beginning and 189.4 MB in the end (delta: -25.3 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:41:06,180 INFO L168 Benchmark]: TraceAbstraction took 12454.02 ms. Allocated memory was 234.9 MB in the beginning and 478.2 MB in the end (delta: 243.3 MB). Free memory was 189.4 MB in the beginning and 113.1 MB in the end (delta: 76.3 MB). Peak memory consumption was 319.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:41:06,184 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 721.07 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 168.6 MB in the end (delta: -65.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.11 ms. Allocated memory is still 203.9 MB. Free memory was 168.6 MB in the beginning and 164.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1166.40 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 164.1 MB in the beginning and 189.4 MB in the end (delta: -25.3 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12454.02 ms. Allocated memory was 234.9 MB in the beginning and 478.2 MB in the end (delta: 243.3 MB). Free memory was 189.4 MB in the beginning and 113.1 MB in the end (delta: 76.3 MB). Peak memory consumption was 319.6 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: 496 SDtfs, 801 SDslu, 348 SDs, 0 SdLazy, 1919 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=513occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 186 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s 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...