/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=0.3 --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 [2020-08-22 04:29:43,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:29:43,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:29:43,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:29:43,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:29:43,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:29:43,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:29:43,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:29:43,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:29:43,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:29:43,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:29:43,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:29:43,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:29:43,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:29:43,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:29:43,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:29:43,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:29:43,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:29:43,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:29:43,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:29:43,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:29:43,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:29:43,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:29:43,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:29:43,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:29:43,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:29:43,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:29:43,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:29:43,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:29:43,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:29:43,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:29:43,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:29:43,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:29:43,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:29:43,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:29:43,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:29:43,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:29:43,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:29:43,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:29:43,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:29:43,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:29:43,148 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 04:29:43,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:29:43,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:29:43,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:29:43,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:29:43,174 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:29:43,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:29:43,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:29:43,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:29:43,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:29:43,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:29:43,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:29:43,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:29:43,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:29:43,175 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:29:43,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:29:43,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:29:43,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:29:43,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:29:43,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:29:43,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:29:43,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:29:43,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:29:43,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:29:43,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:29:43,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:29:43,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:29:43,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:29:43,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:29:43,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:29:43,178 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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-08-22 04:29:43,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:29:43,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:29:43,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:29:43,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:29:43,500 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:29:43,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c [2020-08-22 04:29:43,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/881640725/13a8a391b4d44a6781b56747cdcb447c/FLAG65696877e [2020-08-22 04:29:44,067 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:29:44,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c [2020-08-22 04:29:44,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/881640725/13a8a391b4d44a6781b56747cdcb447c/FLAG65696877e [2020-08-22 04:29:44,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/881640725/13a8a391b4d44a6781b56747cdcb447c [2020-08-22 04:29:44,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:29:44,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:29:44,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:29:44,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:29:44,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:29:44,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:29:44" (1/1) ... [2020-08-22 04:29:44,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a00533e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:44, skipping insertion in model container [2020-08-22 04:29:44,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:29:44" (1/1) ... [2020-08-22 04:29:44,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:29:44,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:29:44,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:29:44,905 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:29:45,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:29:45,048 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:29:45,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:45 WrapperNode [2020-08-22 04:29:45,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:29:45,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:29:45,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:29:45,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:29:45,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:45" (1/1) ... [2020-08-22 04:29:45,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:45" (1/1) ... [2020-08-22 04:29:45,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:45" (1/1) ... [2020-08-22 04:29:45,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:45" (1/1) ... [2020-08-22 04:29:45,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:45" (1/1) ... [2020-08-22 04:29:45,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:45" (1/1) ... [2020-08-22 04:29:45,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:45" (1/1) ... [2020-08-22 04:29:45,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:29:45,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:29:45,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:29:45,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:29:45,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:45" (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 04:29:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:29:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:29:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:29:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:29:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:29:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:29:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:29:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:29:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:29:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:29:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:29:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:29:45,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 04:29:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:29:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:29:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:29:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:29:45,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:29:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:29:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:29:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:29:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:29:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:29:45,234 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:29:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:29:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:29:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:29:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:29:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:29:45,235 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:29:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:29:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 04:29:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 04:29:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:29:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:29:45,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:29:45,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:29:45,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:29:45,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:29:45,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:29:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:29:45,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:29:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:29:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:29:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:29:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:29:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:29:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:29:45,238 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:29:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:29:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:29:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:29:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:29:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:29:45,239 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:29:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:29:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:29:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:29:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:29:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:29:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:29:45,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 04:29:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:29:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:29:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:29:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:29:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:29:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:29:45,241 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 04:29:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 04:29:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:29:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:29:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:29:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:29:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:29:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:29:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:29:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:29:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:29:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:29:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:29:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:29:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:29:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:29:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:29:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:29:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:29:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:29:45,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:29:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:29:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:29:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:29:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:29:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:29:46,250 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:29:46,250 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:29:46,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:29:46 BoogieIcfgContainer [2020-08-22 04:29:46,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:29:46,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:29:46,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:29:46,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:29:46,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:29:44" (1/3) ... [2020-08-22 04:29:46,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b515c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:29:46, skipping insertion in model container [2020-08-22 04:29:46,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:29:45" (2/3) ... [2020-08-22 04:29:46,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b515c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:29:46, skipping insertion in model container [2020-08-22 04:29:46,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:29:46" (3/3) ... [2020-08-22 04:29:46,264 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2020-08-22 04:29:46,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:29:46,282 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:29:46,296 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:29:46,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:29:46,321 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:29:46,321 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:29:46,321 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:29:46,322 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:29:46,322 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:29:46,322 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:29:46,322 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:29:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-22 04:29:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 04:29:46,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:46,357 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 04:29:46,358 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:46,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:46,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1613949641, now seen corresponding path program 1 times [2020-08-22 04:29:46,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:46,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286870577] [2020-08-22 04:29:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:47,010 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:47,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:47,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:47,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:47,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:47,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:29:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:29:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:47,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:47,101 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 04:29:47,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286870577] [2020-08-22 04:29:47,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:47,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:29:47,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132935011] [2020-08-22 04:29:47,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:29:47,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:47,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:29:47,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:29:47,129 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-08-22 04:29:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:48,376 INFO L93 Difference]: Finished difference Result 322 states and 421 transitions. [2020-08-22 04:29:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:29:48,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 04:29:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:48,403 INFO L225 Difference]: With dead ends: 322 [2020-08-22 04:29:48,404 INFO L226 Difference]: Without dead ends: 174 [2020-08-22 04:29:48,410 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 04:29:48,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-22 04:29:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-08-22 04:29:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-22 04:29:48,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-22 04:29:48,517 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 52 [2020-08-22 04:29:48,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:48,518 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-22 04:29:48,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:29:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-22 04:29:48,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 04:29:48,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:48,522 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 04:29:48,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:29:48,523 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:48,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:48,523 INFO L82 PathProgramCache]: Analyzing trace with hash -404683850, now seen corresponding path program 1 times [2020-08-22 04:29:48,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:48,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557900994] [2020-08-22 04:29:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,875 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:48,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:29:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:29:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:29:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:48,923 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 04:29:48,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557900994] [2020-08-22 04:29:48,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:48,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:29:48,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529221792] [2020-08-22 04:29:48,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:29:48,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:48,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:29:48,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:29:48,927 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 4 states. [2020-08-22 04:29:49,387 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:50,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:50,300 INFO L93 Difference]: Finished difference Result 245 states and 300 transitions. [2020-08-22 04:29:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:29:50,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 04:29:50,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:50,305 INFO L225 Difference]: With dead ends: 245 [2020-08-22 04:29:50,305 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 04:29:50,307 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 04:29:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 04:29:50,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 130. [2020-08-22 04:29:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-22 04:29:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-22 04:29:50,350 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 53 [2020-08-22 04:29:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:50,351 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-22 04:29:50,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:29:50,351 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-22 04:29:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 04:29:50,354 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:50,354 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] [2020-08-22 04:29:50,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:29:50,355 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:50,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1069064851, now seen corresponding path program 1 times [2020-08-22 04:29:50,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:50,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681189044] [2020-08-22 04:29:50,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:50,697 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:50,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:50,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:50,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:50,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:29:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:50,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:29:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:50,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:29:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:50,768 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 04:29:50,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681189044] [2020-08-22 04:29:50,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:50,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:29:50,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494926900] [2020-08-22 04:29:50,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:29:50,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:50,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:29:50,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:29:50,771 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 8 states. [2020-08-22 04:29:51,139 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:29:51,485 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:51,745 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:51,992 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:52,775 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:29:54,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:54,774 INFO L93 Difference]: Finished difference Result 451 states and 560 transitions. [2020-08-22 04:29:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:29:54,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 04:29:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:54,782 INFO L225 Difference]: With dead ends: 451 [2020-08-22 04:29:54,782 INFO L226 Difference]: Without dead ends: 345 [2020-08-22 04:29:54,784 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 04:29:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-08-22 04:29:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 280. [2020-08-22 04:29:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-08-22 04:29:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 339 transitions. [2020-08-22 04:29:54,857 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 339 transitions. Word has length 58 [2020-08-22 04:29:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:54,857 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 339 transitions. [2020-08-22 04:29:54,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:29:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 339 transitions. [2020-08-22 04:29:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 04:29:54,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:54,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:29:54,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:29:54,862 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:54,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:54,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1575246874, now seen corresponding path program 1 times [2020-08-22 04:29:54,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:54,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38760704] [2020-08-22 04:29:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,158 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:29:55,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:29:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:29:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:29:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:29:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:29:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:29:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:29:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 04:29:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 04:29:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:29:55,285 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 04:29:55,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38760704] [2020-08-22 04:29:55,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:29:55,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:29:55,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523738345] [2020-08-22 04:29:55,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:29:55,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:29:55,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:29:55,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:29:55,288 INFO L87 Difference]: Start difference. First operand 280 states and 339 transitions. Second operand 8 states. [2020-08-22 04:29:55,650 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:29:57,075 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:57,466 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:57,739 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:29:58,007 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:29:58,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:29:58,861 INFO L93 Difference]: Finished difference Result 863 states and 1137 transitions. [2020-08-22 04:29:58,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 04:29:58,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 04:29:58,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:29:58,869 INFO L225 Difference]: With dead ends: 863 [2020-08-22 04:29:58,869 INFO L226 Difference]: Without dead ends: 607 [2020-08-22 04:29:58,872 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 [2020-08-22 04:29:58,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-08-22 04:29:58,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 537. [2020-08-22 04:29:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-08-22 04:29:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 663 transitions. [2020-08-22 04:29:58,997 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 663 transitions. Word has length 63 [2020-08-22 04:29:58,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:29:58,998 INFO L479 AbstractCegarLoop]: Abstraction has 537 states and 663 transitions. [2020-08-22 04:29:58,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:29:58,998 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 663 transitions. [2020-08-22 04:29:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 04:29:59,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:29:59,004 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 04:29:59,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:29:59,005 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:29:59,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:29:59,005 INFO L82 PathProgramCache]: Analyzing trace with hash 730381356, now seen corresponding path program 1 times [2020-08-22 04:29:59,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:29:59,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203334078] [2020-08-22 04:29:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:29:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:29:59,109 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:29:59,109 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:29:59,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:29:59,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:29:59 BoogieIcfgContainer [2020-08-22 04:29:59,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:29:59,136 INFO L168 Benchmark]: Toolchain (without parser) took 14724.04 ms. Allocated memory was 140.5 MB in the beginning and 447.2 MB in the end (delta: 306.7 MB). Free memory was 102.8 MB in the beginning and 279.5 MB in the end (delta: -176.7 MB). Peak memory consumption was 130.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:29:59,137 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:29:59,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.80 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 172.3 MB in the end (delta: -69.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-08-22 04:29:59,139 INFO L168 Benchmark]: Boogie Preprocessor took 101.13 ms. Allocated memory is still 204.5 MB. Free memory was 172.3 MB in the beginning and 167.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-22 04:29:59,140 INFO L168 Benchmark]: RCFGBuilder took 1105.21 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 167.6 MB in the beginning and 193.4 MB in the end (delta: -25.8 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-08-22 04:29:59,141 INFO L168 Benchmark]: TraceAbstraction took 12877.42 ms. Allocated memory was 235.4 MB in the beginning and 447.2 MB in the end (delta: 211.8 MB). Free memory was 193.4 MB in the beginning and 279.5 MB in the end (delta: -86.0 MB). Peak memory consumption was 125.8 MB. Max. memory is 7.1 GB. [2020-08-22 04:29:59,145 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 635.80 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 172.3 MB in the end (delta: -69.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.13 ms. Allocated memory is still 204.5 MB. Free memory was 172.3 MB in the beginning and 167.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1105.21 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 167.6 MB in the beginning and 193.4 MB in the end (delta: -25.8 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12877.42 ms. Allocated memory was 235.4 MB in the beginning and 447.2 MB in the end (delta: 211.8 MB). Free memory was 193.4 MB in the beginning and 279.5 MB in the end (delta: -86.0 MB). Peak memory consumption was 125.8 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: 12.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 531 SDtfs, 757 SDslu, 420 SDs, 0 SdLazy, 2075 SolverSat, 445 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 1.5s 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...