/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=WIDEST --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_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:00:51,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:00:51,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:00:51,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:00:51,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:00:51,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:00:51,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:00:51,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:00:51,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:00:51,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:00:51,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:00:51,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:00:51,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:00:51,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:00:51,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:00:51,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:00:51,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:00:51,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:00:51,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:00:51,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:00:51,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:00:51,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:00:51,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:00:51,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:00:51,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:00:51,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:00:51,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:00:51,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:00:51,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:00:51,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:00:51,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:00:51,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:00:51,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:00:51,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:00:51,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:00:51,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:00:51,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:00:51,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:00:51,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:00:51,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:00:51,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:00:51,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:00:51,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:00:51,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:00:51,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:00:51,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:00:51,288 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:00:51,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:00:51,288 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:00:51,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:00:51,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:00:51,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:00:51,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:00:51,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:00:51,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:00:51,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:00:51,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:00:51,291 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:00:51,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:00:51,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:00:51,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:00:51,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:00:51,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:00:51,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:00:51,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:00:51,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:00:51,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:00:51,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:00:51,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:00:51,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:00:51,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:00:51,294 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:00:51,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:00:51,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:00:51,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:00:51,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:00:51,614 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:00:51,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c [2020-08-21 22:00:51,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68b722ac8/65d05e984d2b4324b7af4daa200851c0/FLAGb5040e56e [2020-08-21 22:00:52,268 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:00:52,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c [2020-08-21 22:00:52,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68b722ac8/65d05e984d2b4324b7af4daa200851c0/FLAGb5040e56e [2020-08-21 22:00:52,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68b722ac8/65d05e984d2b4324b7af4daa200851c0 [2020-08-21 22:00:52,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:00:52,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:00:52,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:00:52,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:00:52,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:00:52,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:00:52" (1/1) ... [2020-08-21 22:00:52,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47743781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:52, skipping insertion in model container [2020-08-21 22:00:52,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:00:52" (1/1) ... [2020-08-21 22:00:52,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:00:52,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:00:52,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:00:53,071 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:00:53,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:00:53,252 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:00:53,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:53 WrapperNode [2020-08-21 22:00:53,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:00:53,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:00:53,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:00:53,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:00:53,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:53" (1/1) ... [2020-08-21 22:00:53,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:53" (1/1) ... [2020-08-21 22:00:53,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:53" (1/1) ... [2020-08-21 22:00:53,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:53" (1/1) ... [2020-08-21 22:00:53,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:53" (1/1) ... [2020-08-21 22:00:53,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:53" (1/1) ... [2020-08-21 22:00:53,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:53" (1/1) ... [2020-08-21 22:00:53,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:00:53,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:00:53,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:00:53,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:00:53,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:00:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:00:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:00:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:00:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:00:53,414 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:00:53,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:00:53,415 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:00:53,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:00:53,415 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:00:53,415 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:00:53,415 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:00:53,415 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:00:53,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:00:53,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:00:53,416 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:00:53,416 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:00:53,416 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:00:53,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:00:53,417 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:00:53,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:00:53,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:00:53,417 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:00:53,417 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:00:53,417 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:00:53,417 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:00:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:00:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:00:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:00:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:00:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:00:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:00:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:00:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:00:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:00:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:00:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:00:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:00:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:00:53,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:00:53,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:00:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:00:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:00:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:00:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:00:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:00:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:00:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:00:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:00:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:00:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:00:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:00:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:00:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:00:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:00:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:00:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:00:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:00:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:00:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:00:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:00:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:00:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:00:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:00:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:00:53,423 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:00:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:00:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:00:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:00:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:00:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:00:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:00:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:00:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:00:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:00:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:00:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:00:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:00:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:00:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:00:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:00:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:00:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:00:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:00:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:00:53,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:00:53,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:00:53,427 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:00:53,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:00:53,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:00:53,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:00:53,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:00:53,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:00:53,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:00:53,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:00:54,558 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:00:54,558 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:00:54,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:00:54 BoogieIcfgContainer [2020-08-21 22:00:54,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:00:54,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:00:54,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:00:54,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:00:54,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:00:52" (1/3) ... [2020-08-21 22:00:54,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9608dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:00:54, skipping insertion in model container [2020-08-21 22:00:54,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:00:53" (2/3) ... [2020-08-21 22:00:54,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9608dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:00:54, skipping insertion in model container [2020-08-21 22:00:54,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:00:54" (3/3) ... [2020-08-21 22:00:54,573 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2020-08-21 22:00:54,584 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:00:54,592 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:00:54,607 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:00:54,633 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:00:54,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:00:54,634 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:00:54,634 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:00:54,634 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:00:54,634 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:00:54,634 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:00:54,635 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:00:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-21 22:00:54,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:00:54,675 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:54,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:00:54,677 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:54,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1613949641, now seen corresponding path program 1 times [2020-08-21 22:00:54,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:54,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238270638] [2020-08-21 22:00:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:55,468 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:00:55,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:55,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:55,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:55,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:55,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:00:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:00:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:55,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:00:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:00:55,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238270638] [2020-08-21 22:00:55,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:00:55,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:00:55,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811370088] [2020-08-21 22:00:55,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:00:55,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:55,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:00:55,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:00:55,596 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-08-21 22:00:56,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:56,800 INFO L93 Difference]: Finished difference Result 322 states and 421 transitions. [2020-08-21 22:00:56,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:00:56,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 22:00:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:56,817 INFO L225 Difference]: With dead ends: 322 [2020-08-21 22:00:56,818 INFO L226 Difference]: Without dead ends: 174 [2020-08-21 22:00:56,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:00:56,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-21 22:00:56,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-08-21 22:00:56,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-21 22:00:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-21 22:00:56,918 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 52 [2020-08-21 22:00:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:56,918 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-21 22:00:56,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:00:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-21 22:00:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 22:00:56,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:56,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:00:56,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:00:56,924 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:56,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:56,924 INFO L82 PathProgramCache]: Analyzing trace with hash -404683850, now seen corresponding path program 1 times [2020-08-21 22:00:56,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:56,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277190601] [2020-08-21 22:00:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,248 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:00:57,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:00:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:00:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:00:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:00:57,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277190601] [2020-08-21 22:00:57,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:00:57,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:00:57,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516297826] [2020-08-21 22:00:57,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:00:57,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:57,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:00:57,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:00:57,296 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 4 states. [2020-08-21 22:00:57,717 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:00:58,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:00:58,725 INFO L93 Difference]: Finished difference Result 245 states and 300 transitions. [2020-08-21 22:00:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:00:58,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 22:00:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:00:58,730 INFO L225 Difference]: With dead ends: 245 [2020-08-21 22:00:58,733 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 22:00:58,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:00:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 22:00:58,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 130. [2020-08-21 22:00:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-21 22:00:58,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-21 22:00:58,787 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 53 [2020-08-21 22:00:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:00:58,788 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-21 22:00:58,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:00:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-21 22:00:58,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 22:00:58,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:00:58,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:00:58,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:00:58,791 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:00:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:00:58,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1069064851, now seen corresponding path program 1 times [2020-08-21 22:00:58,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:00:58,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829727945] [2020-08-21 22:00:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:00:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:59,132 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:00:59,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:00:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:59,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:00:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:59,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:00:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:59,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:00:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:59,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:00:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:59,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:00:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:59,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:00:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:59,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:00:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:00:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:00:59,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829727945] [2020-08-21 22:00:59,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:00:59,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:00:59,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720898628] [2020-08-21 22:00:59,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:00:59,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:00:59,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:00:59,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:00:59,201 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 8 states. [2020-08-21 22:00:59,589 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:00:59,902 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:00,188 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:00,413 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:01,146 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:01:03,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:03,231 INFO L93 Difference]: Finished difference Result 451 states and 560 transitions. [2020-08-21 22:01:03,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:01:03,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 22:01:03,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:03,238 INFO L225 Difference]: With dead ends: 451 [2020-08-21 22:01:03,238 INFO L226 Difference]: Without dead ends: 345 [2020-08-21 22:01:03,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:01:03,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-08-21 22:01:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 280. [2020-08-21 22:01:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-08-21 22:01:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 339 transitions. [2020-08-21 22:01:03,320 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 339 transitions. Word has length 58 [2020-08-21 22:01:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:03,320 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 339 transitions. [2020-08-21 22:01:03,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:01:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 339 transitions. [2020-08-21 22:01:03,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 22:01:03,324 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:03,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:01:03,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:01:03,325 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:03,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:03,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1575246874, now seen corresponding path program 1 times [2020-08-21 22:01:03,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:03,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827807218] [2020-08-21 22:01:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,629 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:01:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:01:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:01:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:01:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:01:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:01:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:01:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:01:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:01:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 22:01:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:01:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:01:03,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827807218] [2020-08-21 22:01:03,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:01:03,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:01:03,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219660270] [2020-08-21 22:01:03,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:01:03,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:01:03,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:01:03,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:01:03,750 INFO L87 Difference]: Start difference. First operand 280 states and 339 transitions. Second operand 8 states. [2020-08-21 22:01:04,242 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:05,726 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:06,115 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:06,393 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:01:06,667 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:01:07,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:01:07,547 INFO L93 Difference]: Finished difference Result 863 states and 1137 transitions. [2020-08-21 22:01:07,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:01:07,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 22:01:07,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:01:07,559 INFO L225 Difference]: With dead ends: 863 [2020-08-21 22:01:07,559 INFO L226 Difference]: Without dead ends: 607 [2020-08-21 22:01:07,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:01:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-08-21 22:01:07,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 537. [2020-08-21 22:01:07,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-08-21 22:01:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 663 transitions. [2020-08-21 22:01:07,688 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 663 transitions. Word has length 63 [2020-08-21 22:01:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:01:07,689 INFO L479 AbstractCegarLoop]: Abstraction has 537 states and 663 transitions. [2020-08-21 22:01:07,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:01:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 663 transitions. [2020-08-21 22:01:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 22:01:07,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:01:07,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:01:07,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:01:07,693 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:01:07,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:01:07,694 INFO L82 PathProgramCache]: Analyzing trace with hash 730381356, now seen corresponding path program 1 times [2020-08-21 22:01:07,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:01:07,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255356014] [2020-08-21 22:01:07,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:01:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:01:07,755 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:01:07,756 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:01:07,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:01:07,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:01:07 BoogieIcfgContainer [2020-08-21 22:01:07,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:01:07,786 INFO L168 Benchmark]: Toolchain (without parser) took 15236.13 ms. Allocated memory was 139.5 MB in the beginning and 482.9 MB in the end (delta: 343.4 MB). Free memory was 101.5 MB in the beginning and 235.5 MB in the end (delta: -134.0 MB). Peak memory consumption was 209.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:07,787 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-21 22:01:07,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.65 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 171.2 MB in the end (delta: -69.7 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:07,789 INFO L168 Benchmark]: Boogie Preprocessor took 89.78 ms. Allocated memory is still 201.9 MB. Free memory was 171.2 MB in the beginning and 166.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:07,790 INFO L168 Benchmark]: RCFGBuilder took 1220.30 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 166.3 MB in the beginning and 198.5 MB in the end (delta: -32.2 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:07,791 INFO L168 Benchmark]: TraceAbstraction took 13218.50 ms. Allocated memory was 234.9 MB in the beginning and 482.9 MB in the end (delta: 248.0 MB). Free memory was 196.8 MB in the beginning and 235.5 MB in the end (delta: -38.7 MB). Peak memory consumption was 209.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:01:07,795 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.65 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 171.2 MB in the end (delta: -69.7 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.78 ms. Allocated memory is still 201.9 MB. Free memory was 171.2 MB in the beginning and 166.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1220.30 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 166.3 MB in the beginning and 198.5 MB in the end (delta: -32.2 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13218.50 ms. Allocated memory was 234.9 MB in the beginning and 482.9 MB in the end (delta: 248.0 MB). Free memory was 196.8 MB in the beginning and 235.5 MB in the end (delta: -38.7 MB). Peak memory consumption was 209.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 221]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int waterLevel = 1; [L230] int methaneLevelCritical = 0; [L327] int pumpRunning = 0; [L328] int systemActive = 1; [L766] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L529] int splverifierCounter ; [L530] int tmp ; [L531] int tmp___0 ; [L532] int tmp___1 ; [L533] int tmp___2 ; [L536] splverifierCounter = 0 [L538] COND TRUE 1 [L540] COND TRUE splverifierCounter < 4 [L546] tmp = __VERIFIER_nondet_int() [L548] COND TRUE \read(tmp) [L550] CALL waterRise() [L247] COND TRUE waterLevel < 2 [L248] waterLevel = waterLevel + 1 [L550] RET waterRise() [L556] tmp___0 = __VERIFIER_nondet_int() [L558] COND FALSE !(\read(tmp___0)) [L566] tmp___2 = __VERIFIER_nondet_int() [L568] COND FALSE !(\read(tmp___2)) [L574] tmp___1 = __VERIFIER_nondet_int() [L576] COND TRUE \read(tmp___1) [L578] CALL stopSystem() [L508] COND FALSE !(\read(pumpRunning)) [L515] systemActive = 0 [L578] RET stopSystem() [L585] CALL timeShift() [L334] COND FALSE !(\read(pumpRunning)) [L341] COND FALSE !(\read(systemActive)) [L349] CALL __utac_acc__Specification3_spec__1() [L184] int tmp ; [L185] int tmp___0 ; [L186] int tmp___1 ; [L190] CALL, EXPR isMethaneLevelCritical() [L268] int retValue_acc ; [L271] retValue_acc = methaneLevelCritical [L272] return (retValue_acc); [L190] RET, EXPR isMethaneLevelCritical() [L190] tmp = isMethaneLevelCritical() [L192] COND FALSE !(\read(tmp)) [L196] CALL, EXPR getWaterLevel() [L300] int retValue_acc ; [L303] retValue_acc = waterLevel [L304] return (retValue_acc); [L196] RET, EXPR getWaterLevel() [L196] tmp___0 = getWaterLevel() [L198] COND TRUE tmp___0 == 2 [L200] CALL, EXPR isPumpRunning() [L441] int retValue_acc ; [L444] retValue_acc = pumpRunning [L445] return (retValue_acc); [L200] RET, EXPR isPumpRunning() [L200] tmp___1 = isPumpRunning() [L202] COND FALSE !(\read(tmp___1)) [L206] CALL __automaton_fail() [L221] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 238 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 533 SDtfs, 757 SDslu, 421 SDs, 0 SdLazy, 2082 SolverSat, 445 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=537occurred 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, 198 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...