/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:26:09,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:26:09,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:26:09,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:26:09,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:26:09,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:26:09,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:26:09,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:26:09,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:26:09,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:26:09,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:26:09,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:26:09,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:26:09,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:26:09,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:26:09,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:26:09,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:26:09,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:26:09,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:26:09,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:26:09,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:26:09,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:26:09,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:26:09,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:26:09,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:26:09,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:26:09,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:26:09,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:26:09,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:26:09,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:26:09,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:26:09,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:26:09,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:26:09,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:26:09,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:26:09,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:26:09,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:26:09,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:26:09,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:26:09,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:26:09,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:26:09,121 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 00:26:09,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:26:09,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:26:09,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:26:09,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:26:09,146 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:26:09,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:26:09,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:26:09,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:26:09,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:26:09,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:26:09,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:26:09,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:26:09,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:26:09,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:26:09,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:26:09,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:26:09,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:26:09,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:26:09,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:26:09,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:26:09,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:26:09,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:26:09,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:26:09,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:26:09,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:26:09,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:26:09,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:26:09,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:26:09,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:26:09,151 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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:26:09,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:26:09,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:26:09,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:26:09,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:26:09,451 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:26:09,453 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product35.cil.c [2020-08-22 00:26:09,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a8ab7b60/caf917a255914bc28f4a1c9a271b61ee/FLAGa5e4fcace [2020-08-22 00:26:09,991 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:26:09,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product35.cil.c [2020-08-22 00:26:10,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a8ab7b60/caf917a255914bc28f4a1c9a271b61ee/FLAGa5e4fcace [2020-08-22 00:26:10,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a8ab7b60/caf917a255914bc28f4a1c9a271b61ee [2020-08-22 00:26:10,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:26:10,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:26:10,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:26:10,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:26:10,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:26:10,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:26:10" (1/1) ... [2020-08-22 00:26:10,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcf94a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:10, skipping insertion in model container [2020-08-22 00:26:10,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:26:10" (1/1) ... [2020-08-22 00:26:10,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:26:10,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:26:10,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:26:10,946 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:26:11,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:26:11,081 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:26:11,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:11 WrapperNode [2020-08-22 00:26:11,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:26:11,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:26:11,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:26:11,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:26:11,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:11" (1/1) ... [2020-08-22 00:26:11,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:11" (1/1) ... [2020-08-22 00:26:11,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:11" (1/1) ... [2020-08-22 00:26:11,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:11" (1/1) ... [2020-08-22 00:26:11,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:11" (1/1) ... [2020-08-22 00:26:11,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:11" (1/1) ... [2020-08-22 00:26:11,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:11" (1/1) ... [2020-08-22 00:26:11,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:26:11,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:26:11,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:26:11,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:26:11,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:11" (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 00:26:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:26:11,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:26:11,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:26:11,265 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:26:11,265 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:26:11,265 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:26:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:26:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:26:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:26:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:26:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:26:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:26:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 00:26:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 00:26:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 00:26:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:26:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:26:11,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:26:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:26:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:26:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:26:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:26:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:26:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:26:11,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:26:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:26:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 00:26:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:26:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:26:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:26:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:26:11,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:26:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:26:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:26:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:26:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:26:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:26:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:26:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:26:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:26:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:26:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:26:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:26:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 00:26:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:26:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:26:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:26:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:26:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:26:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:26:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 00:26:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:26:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:26:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:26:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:26:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 00:26:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:26:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:26:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 00:26:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:26:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:26:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:26:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:26:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:26:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:26:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:26:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:26:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:26:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:26:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:26:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:26:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:26:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:26:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:26:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:26:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:26:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:26:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:26:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:26:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:26:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:26:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:26:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:26:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:26:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:26:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:26:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:26:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:26:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:26:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:26:12,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:26:12,358 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:26:12,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:26:12 BoogieIcfgContainer [2020-08-22 00:26:12,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:26:12,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:26:12,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:26:12,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:26:12,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:26:10" (1/3) ... [2020-08-22 00:26:12,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7047b7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:26:12, skipping insertion in model container [2020-08-22 00:26:12,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:11" (2/3) ... [2020-08-22 00:26:12,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7047b7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:26:12, skipping insertion in model container [2020-08-22 00:26:12,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:26:12" (3/3) ... [2020-08-22 00:26:12,372 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product35.cil.c [2020-08-22 00:26:12,383 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:26:12,391 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:26:12,407 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:26:12,433 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:26:12,433 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:26:12,433 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:26:12,433 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:26:12,434 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:26:12,434 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:26:12,434 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:26:12,434 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:26:12,458 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-22 00:26:12,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:26:12,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:12,470 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 00:26:12,471 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:12,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:12,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1153926417, now seen corresponding path program 1 times [2020-08-22 00:26:12,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:12,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911579148] [2020-08-22 00:26:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,286 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:13,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:26:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:26:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:26:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,402 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 00:26:13,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911579148] [2020-08-22 00:26:13,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:13,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:26:13,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241877552] [2020-08-22 00:26:13,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:26:13,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:13,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:26:13,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:26:13,432 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-22 00:26:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:14,522 INFO L93 Difference]: Finished difference Result 281 states and 368 transitions. [2020-08-22 00:26:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:26:14,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 00:26:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:14,544 INFO L225 Difference]: With dead ends: 281 [2020-08-22 00:26:14,544 INFO L226 Difference]: Without dead ends: 152 [2020-08-22 00:26:14,549 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 00:26:14,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-22 00:26:14,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2020-08-22 00:26:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 00:26:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-22 00:26:14,635 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 52 [2020-08-22 00:26:14,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:14,636 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-22 00:26:14,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:26:14,636 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-22 00:26:14,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 00:26:14,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:14,640 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 00:26:14,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:26:14,641 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:14,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:14,641 INFO L82 PathProgramCache]: Analyzing trace with hash -548767927, now seen corresponding path program 1 times [2020-08-22 00:26:14,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:14,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599175307] [2020-08-22 00:26:14,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:14,952 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:14,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:14,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:14,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:14,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:26:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:14,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:26:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:14,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:26:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:14,997 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 00:26:14,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599175307] [2020-08-22 00:26:14,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:14,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:26:14,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563257027] [2020-08-22 00:26:15,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:26:15,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:15,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:26:15,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:26:15,001 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-08-22 00:26:15,471 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:16,219 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2020-08-22 00:26:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:26:16,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 00:26:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:16,224 INFO L225 Difference]: With dead ends: 205 [2020-08-22 00:26:16,224 INFO L226 Difference]: Without dead ends: 136 [2020-08-22 00:26:16,225 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 00:26:16,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-22 00:26:16,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-08-22 00:26:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-22 00:26:16,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2020-08-22 00:26:16,260 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 53 [2020-08-22 00:26:16,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:16,260 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2020-08-22 00:26:16,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:26:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2020-08-22 00:26:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 00:26:16,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:16,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:26:16,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:26:16,264 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:16,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:16,264 INFO L82 PathProgramCache]: Analyzing trace with hash 196992317, now seen corresponding path program 1 times [2020-08-22 00:26:16,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:16,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414207052] [2020-08-22 00:26:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,650 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:26:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:26:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 00:26:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,786 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 00:26:16,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414207052] [2020-08-22 00:26:16,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:16,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:26:16,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823315123] [2020-08-22 00:26:16,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:26:16,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:16,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:26:16,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:26:16,789 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 8 states. [2020-08-22 00:26:17,156 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:17,441 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:17,711 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:17,962 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:18,665 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:20,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:20,166 INFO L93 Difference]: Finished difference Result 387 states and 477 transitions. [2020-08-22 00:26:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:26:20,169 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 00:26:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:20,173 INFO L225 Difference]: With dead ends: 387 [2020-08-22 00:26:20,174 INFO L226 Difference]: Without dead ends: 300 [2020-08-22 00:26:20,175 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 00:26:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-08-22 00:26:20,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 234. [2020-08-22 00:26:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-08-22 00:26:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 279 transitions. [2020-08-22 00:26:20,247 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 279 transitions. Word has length 57 [2020-08-22 00:26:20,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:20,248 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 279 transitions. [2020-08-22 00:26:20,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:26:20,248 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 279 transitions. [2020-08-22 00:26:20,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 00:26:20,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:20,252 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 00:26:20,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:26:20,252 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash 925372224, now seen corresponding path program 1 times [2020-08-22 00:26:20,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:20,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003833548] [2020-08-22 00:26:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:20,517 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:20,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:20,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:20,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:20,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:20,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:26:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:20,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:26:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:20,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 00:26:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 00:26:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:20,602 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 00:26:20,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003833548] [2020-08-22 00:26:20,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:20,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:26:20,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554744466] [2020-08-22 00:26:20,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:26:20,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:20,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:26:20,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:26:20,605 INFO L87 Difference]: Start difference. First operand 234 states and 279 transitions. Second operand 8 states. [2020-08-22 00:26:20,961 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:22,207 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:22,509 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:22,789 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:23,014 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:23,625 INFO L93 Difference]: Finished difference Result 714 states and 935 transitions. [2020-08-22 00:26:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:26:23,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 00:26:23,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:23,645 INFO L225 Difference]: With dead ends: 714 [2020-08-22 00:26:23,645 INFO L226 Difference]: Without dead ends: 504 [2020-08-22 00:26:23,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:26:23,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-08-22 00:26:23,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 441. [2020-08-22 00:26:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-08-22 00:26:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 537 transitions. [2020-08-22 00:26:23,753 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 537 transitions. Word has length 63 [2020-08-22 00:26:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:23,754 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 537 transitions. [2020-08-22 00:26:23,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:26:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 537 transitions. [2020-08-22 00:26:23,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 00:26:23,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:23,758 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 00:26:23,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:26:23,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:23,759 INFO L82 PathProgramCache]: Analyzing trace with hash -910069242, now seen corresponding path program 1 times [2020-08-22 00:26:23,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:23,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639696282] [2020-08-22 00:26:23,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:26:23,813 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:26:23,813 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:26:23,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:26:23,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:26:23 BoogieIcfgContainer [2020-08-22 00:26:23,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:26:23,843 INFO L168 Benchmark]: Toolchain (without parser) took 13478.49 ms. Allocated memory was 140.0 MB in the beginning and 431.5 MB in the end (delta: 291.5 MB). Free memory was 101.8 MB in the beginning and 191.7 MB in the end (delta: -89.8 MB). Peak memory consumption was 201.7 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:23,843 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 00:26:23,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.39 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 101.6 MB in the beginning and 171.6 MB in the end (delta: -69.9 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:23,845 INFO L168 Benchmark]: Boogie Preprocessor took 112.71 ms. Allocated memory is still 205.0 MB. Free memory was 171.6 MB in the beginning and 166.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:23,846 INFO L168 Benchmark]: RCFGBuilder took 1166.59 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 166.8 MB in the beginning and 196.9 MB in the end (delta: -30.1 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:23,847 INFO L168 Benchmark]: TraceAbstraction took 11475.73 ms. Allocated memory was 235.9 MB in the beginning and 431.5 MB in the end (delta: 195.6 MB). Free memory was 195.5 MB in the beginning and 191.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 199.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:23,851 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.39 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 101.6 MB in the beginning and 171.6 MB in the end (delta: -69.9 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.71 ms. Allocated memory is still 205.0 MB. Free memory was 171.6 MB in the beginning and 166.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1166.59 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 166.8 MB in the beginning and 196.9 MB in the end (delta: -30.1 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11475.73 ms. Allocated memory was 235.9 MB in the beginning and 431.5 MB in the end (delta: 195.6 MB). Free memory was 195.5 MB in the beginning and 191.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 199.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 556]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L324] int cleanupTimeShifts = 4; [L423] int waterLevel = 1; [L424] int methaneLevelCritical = 0; [L730] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L400] int retValue_acc ; [L401] int tmp ; [L405] FCALL select_helpers() [L406] FCALL select_features() [L407] CALL, EXPR valid_product() [L543] int retValue_acc ; [L546] retValue_acc = 1 [L547] return (retValue_acc); [L407] RET, EXPR valid_product() [L407] tmp = valid_product() [L409] COND TRUE \read(tmp) [L411] FCALL setup() [L412] CALL runTest() [L391] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L441] COND TRUE waterLevel < 2 [L442] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___2)) [L89] tmp___1 = __VERIFIER_nondet_int() [L91] COND TRUE \read(tmp___1) [L93] CALL stopSystem() [L276] COND FALSE !(\read(pumpRunning)) [L283] systemActive = 0 [L93] RET stopSystem() [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND FALSE !(\read(systemActive)) [L143] CALL __utac_acc__Specification3_spec__1() [L291] int tmp ; [L292] int tmp___0 ; [L293] int tmp___1 ; [L297] CALL, EXPR isMethaneLevelCritical() [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); [L297] RET, EXPR isMethaneLevelCritical() [L297] tmp = isMethaneLevelCritical() [L299] COND FALSE !(\read(tmp)) [L303] CALL, EXPR getWaterLevel() [L494] int retValue_acc ; [L497] retValue_acc = waterLevel [L498] return (retValue_acc); [L303] RET, EXPR getWaterLevel() [L303] tmp___0 = getWaterLevel() [L305] COND TRUE tmp___0 == 2 [L307] CALL, EXPR isPumpRunning() [L209] int retValue_acc ; [L212] retValue_acc = pumpRunning [L213] return (retValue_acc); [L307] RET, EXPR isPumpRunning() [L307] tmp___1 = isPumpRunning() [L309] COND FALSE !(\read(tmp___1)) [L313] CALL __automaton_fail() [L556] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 451 SDtfs, 636 SDslu, 358 SDs, 0 SdLazy, 1778 SolverSat, 351 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=441occurred 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: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 186 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 61524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...