/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:18:31,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:18:31,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:18:31,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:18:31,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:18:31,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:18:31,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:18:31,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:18:31,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:18:31,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:18:31,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:18:31,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:18:31,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:18:31,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:18:31,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:18:31,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:18:31,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:18:31,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:18:31,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:18:31,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:18:31,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:18:31,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:18:31,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:18:31,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:18:31,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:18:31,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:18:31,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:18:31,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:18:31,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:18:31,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:18:31,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:18:31,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:18:31,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:18:31,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:18:31,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:18:31,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:18:31,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:18:31,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:18:31,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:18:31,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:18:31,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:18:31,144 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 [2020-08-18 15:18:31,192 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:18:31,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:18:31,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:18:31,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:18:31,195 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:18:31,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:18:31,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:18:31,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:18:31,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:18:31,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:18:31,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:18:31,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:18:31,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:18:31,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:18:31,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:18:31,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:18:31,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:18:31,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:18:31,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:18:31,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:18:31,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:18:31,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:18:31,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:18:31,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:18:31,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:18:31,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:18:31,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:18:31,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:18:31,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:18:31,201 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 -> false [2020-08-18 15:18:31,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:18:31,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:18:31,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:18:31,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:18:31,504 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:18:31,505 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c [2020-08-18 15:18:31,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d7f8b121/550a51e2b5c647ee9a0db6c88e7c5c73/FLAG1b221d816 [2020-08-18 15:18:32,167 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:18:32,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c [2020-08-18 15:18:32,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d7f8b121/550a51e2b5c647ee9a0db6c88e7c5c73/FLAG1b221d816 [2020-08-18 15:18:32,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d7f8b121/550a51e2b5c647ee9a0db6c88e7c5c73 [2020-08-18 15:18:32,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:18:32,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:18:32,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:18:32,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:18:32,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:18:32,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:18:32" (1/1) ... [2020-08-18 15:18:32,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137551ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:32, skipping insertion in model container [2020-08-18 15:18:32,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:18:32" (1/1) ... [2020-08-18 15:18:32,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:18:32,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:18:32,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:18:32,976 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:18:33,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:18:33,090 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:18:33,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:33 WrapperNode [2020-08-18 15:18:33,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:18:33,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:18:33,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:18:33,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:18:33,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:33" (1/1) ... [2020-08-18 15:18:33,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:33" (1/1) ... [2020-08-18 15:18:33,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:33" (1/1) ... [2020-08-18 15:18:33,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:33" (1/1) ... [2020-08-18 15:18:33,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:33" (1/1) ... [2020-08-18 15:18:33,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:33" (1/1) ... [2020-08-18 15:18:33,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:33" (1/1) ... [2020-08-18 15:18:33,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:18:33,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:18:33,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:18:33,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:18:33,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:33" (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 [2020-08-18 15:18:33,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:18:33,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:18:33,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:18:33,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:18:33,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:18:33,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:18:33,260 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:18:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:18:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:18:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:18:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 15:18:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:18:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:18:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:18:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:18:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:18:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 15:18:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 15:18:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 15:18:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:18:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:18:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:18:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:18:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:18:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:18:33,264 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:18:33,264 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 15:18:33,264 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:18:33,264 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:18:33,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:18:33,264 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:18:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:18:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:18:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 15:18:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:18:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:18:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:18:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:18:33,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:18:33,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:18:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:18:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:18:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:18:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:18:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:18:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:18:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:18:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:18:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:18:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:18:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 15:18:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:18:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:18:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:18:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:18:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:18:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 15:18:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 15:18:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 15:18:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:18:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:18:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 15:18:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 15:18:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:18:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:18:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:18:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:18:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:18:33,271 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:18:33,271 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:18:33,271 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:18:33,271 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:18:33,271 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:18:33,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:18:33,271 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:18:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:18:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:18:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:18:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:18:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:18:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:18:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:18:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:18:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:18:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:18:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:18:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:18:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:18:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:18:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:18:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:18:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:18:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:18:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:18:34,391 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:18:34,391 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:18:34,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:18:34 BoogieIcfgContainer [2020-08-18 15:18:34,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:18:34,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:18:34,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:18:34,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:18:34,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:18:32" (1/3) ... [2020-08-18 15:18:34,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a451b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:18:34, skipping insertion in model container [2020-08-18 15:18:34,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:33" (2/3) ... [2020-08-18 15:18:34,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a451b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:18:34, skipping insertion in model container [2020-08-18 15:18:34,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:18:34" (3/3) ... [2020-08-18 15:18:34,405 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product28.cil.c [2020-08-18 15:18:34,416 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:18:34,424 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:18:34,439 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:18:34,465 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:18:34,465 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:18:34,465 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:18:34,466 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:18:34,466 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:18:34,466 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:18:34,466 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:18:34,467 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:18:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-18 15:18:34,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 15:18:34,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:34,502 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] [2020-08-18 15:18:34,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:34,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:34,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1443511359, now seen corresponding path program 1 times [2020-08-18 15:18:34,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:34,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769207558] [2020-08-18 15:18:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:35,208 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:35,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:35,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:35,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:35,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:35,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:18:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:35,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:18:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:18:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:35,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769207558] [2020-08-18 15:18:35,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:35,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:18:35,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428185549] [2020-08-18 15:18:35,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:18:35,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:35,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:18:35,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:18:35,382 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-18 15:18:36,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:36,500 INFO L93 Difference]: Finished difference Result 282 states and 370 transitions. [2020-08-18 15:18:36,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:18:36,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 15:18:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:36,518 INFO L225 Difference]: With dead ends: 282 [2020-08-18 15:18:36,519 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 15:18:36,524 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 [2020-08-18 15:18:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 15:18:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-08-18 15:18:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 15:18:36,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-18 15:18:36,618 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 52 [2020-08-18 15:18:36,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:36,618 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-18 15:18:36,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:18:36,619 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-18 15:18:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 15:18:36,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:36,623 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] [2020-08-18 15:18:36,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:18:36,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:36,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:36,625 INFO L82 PathProgramCache]: Analyzing trace with hash 880615085, now seen corresponding path program 1 times [2020-08-18 15:18:36,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:36,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377585756] [2020-08-18 15:18:36,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:36,954 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:36,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:36,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:36,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:36,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:18:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:36,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:18:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:36,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 15:18:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:36,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377585756] [2020-08-18 15:18:36,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:36,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:18:37,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712389192] [2020-08-18 15:18:37,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:18:37,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:37,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:18:37,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:18:37,003 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-08-18 15:18:37,421 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:18:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:38,148 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2020-08-18 15:18:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:18:38,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 15:18:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:38,152 INFO L225 Difference]: With dead ends: 205 [2020-08-18 15:18:38,152 INFO L226 Difference]: Without dead ends: 137 [2020-08-18 15:18:38,160 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 [2020-08-18 15:18:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-18 15:18:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2020-08-18 15:18:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-18 15:18:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2020-08-18 15:18:38,203 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 53 [2020-08-18 15:18:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:38,203 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2020-08-18 15:18:38,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:18:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2020-08-18 15:18:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 15:18:38,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:38,206 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] [2020-08-18 15:18:38,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:18:38,206 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:38,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:38,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1617309652, now seen corresponding path program 1 times [2020-08-18 15:18:38,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:38,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918323072] [2020-08-18 15:18:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:38,614 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:38,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:38,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:38,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:38,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:38,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:18:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:18:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:38,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:18:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:38,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918323072] [2020-08-18 15:18:38,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:38,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:18:38,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179279717] [2020-08-18 15:18:38,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:18:38,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:38,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:18:38,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:18:38,752 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 8 states. [2020-08-18 15:18:39,120 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:39,442 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:39,686 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:39,918 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:40,633 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:18:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:42,181 INFO L93 Difference]: Finished difference Result 390 states and 482 transitions. [2020-08-18 15:18:42,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:18:42,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 15:18:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:42,191 INFO L225 Difference]: With dead ends: 390 [2020-08-18 15:18:42,191 INFO L226 Difference]: Without dead ends: 303 [2020-08-18 15:18:42,192 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 [2020-08-18 15:18:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-18 15:18:42,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 242. [2020-08-18 15:18:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-18 15:18:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2020-08-18 15:18:42,283 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 58 [2020-08-18 15:18:42,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:42,283 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2020-08-18 15:18:42,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:18:42,283 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2020-08-18 15:18:42,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 15:18:42,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:42,286 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] [2020-08-18 15:18:42,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:18:42,287 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:42,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:42,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1904985657, now seen corresponding path program 1 times [2020-08-18 15:18:42,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:42,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646799187] [2020-08-18 15:18:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:42,590 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:42,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:42,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:42,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:42,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:42,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:18:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:42,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:18:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:42,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 15:18:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 15:18:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:42,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646799187] [2020-08-18 15:18:42,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:42,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:18:42,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839794619] [2020-08-18 15:18:42,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:18:42,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:42,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:18:42,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:18:42,712 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand 8 states. [2020-08-18 15:18:43,144 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:44,407 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:44,719 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:44,976 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:45,245 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:45,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:45,887 INFO L93 Difference]: Finished difference Result 741 states and 971 transitions. [2020-08-18 15:18:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:18:45,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 15:18:45,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:45,893 INFO L225 Difference]: With dead ends: 741 [2020-08-18 15:18:45,894 INFO L226 Difference]: Without dead ends: 523 [2020-08-18 15:18:45,896 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 [2020-08-18 15:18:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-18 15:18:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 457. [2020-08-18 15:18:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-18 15:18:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 563 transitions. [2020-08-18 15:18:46,000 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 563 transitions. Word has length 63 [2020-08-18 15:18:46,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:46,001 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 563 transitions. [2020-08-18 15:18:46,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:18:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 563 transitions. [2020-08-18 15:18:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 15:18:46,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:46,005 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] [2020-08-18 15:18:46,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:18:46,006 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:46,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:46,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1824895917, now seen corresponding path program 1 times [2020-08-18 15:18:46,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:46,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011468803] [2020-08-18 15:18:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:46,269 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:46,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:46,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:46,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:46,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:18:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:46,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:18:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:46,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:18:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:46,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 15:18:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 15:18:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:46,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011468803] [2020-08-18 15:18:46,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:46,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:18:46,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758928633] [2020-08-18 15:18:46,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:18:46,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:46,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:18:46,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:18:46,354 INFO L87 Difference]: Start difference. First operand 457 states and 563 transitions. Second operand 6 states. [2020-08-18 15:18:46,660 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:47,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:47,473 INFO L93 Difference]: Finished difference Result 806 states and 1047 transitions. [2020-08-18 15:18:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 15:18:47,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-18 15:18:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:47,478 INFO L225 Difference]: With dead ends: 806 [2020-08-18 15:18:47,478 INFO L226 Difference]: Without dead ends: 373 [2020-08-18 15:18:47,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:18:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-08-18 15:18:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 323. [2020-08-18 15:18:47,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-18 15:18:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 374 transitions. [2020-08-18 15:18:47,574 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 374 transitions. Word has length 67 [2020-08-18 15:18:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:47,574 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 374 transitions. [2020-08-18 15:18:47,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:18:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 374 transitions. [2020-08-18 15:18:47,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 15:18:47,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:47,579 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] [2020-08-18 15:18:47,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:18:47,579 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:47,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:47,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2047531853, now seen corresponding path program 1 times [2020-08-18 15:18:47,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:47,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543046119] [2020-08-18 15:18:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:18:47,663 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:18:47,663 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:18:47,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:18:47,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:18:47 BoogieIcfgContainer [2020-08-18 15:18:47,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:18:47,703 INFO L168 Benchmark]: Toolchain (without parser) took 15235.94 ms. Allocated memory was 141.0 MB in the beginning and 474.5 MB in the end (delta: 333.4 MB). Free memory was 103.2 MB in the beginning and 233.1 MB in the end (delta: -129.9 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:47,704 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-18 15:18:47,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.33 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.2 MB in the beginning and 171.9 MB in the end (delta: -68.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:47,712 INFO L168 Benchmark]: Boogie Preprocessor took 92.56 ms. Allocated memory is still 204.5 MB. Free memory was 171.9 MB in the beginning and 167.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:47,713 INFO L168 Benchmark]: RCFGBuilder took 1211.91 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 167.0 MB in the beginning and 192.3 MB in the end (delta: -25.2 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:47,713 INFO L168 Benchmark]: TraceAbstraction took 13301.91 ms. Allocated memory was 234.9 MB in the beginning and 474.5 MB in the end (delta: 239.6 MB). Free memory was 192.3 MB in the beginning and 233.1 MB in the end (delta: -40.9 MB). Peak memory consumption was 198.7 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:47,724 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 624.33 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.2 MB in the beginning and 171.9 MB in the end (delta: -68.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.56 ms. Allocated memory is still 204.5 MB. Free memory was 171.9 MB in the beginning and 167.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1211.91 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 167.0 MB in the beginning and 192.3 MB in the end (delta: -25.2 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13301.91 ms. Allocated memory was 234.9 MB in the beginning and 474.5 MB in the end (delta: 239.6 MB). Free memory was 192.3 MB in the beginning and 233.1 MB in the end (delta: -40.9 MB). Peak memory consumption was 198.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L89] int pumpRunning = 0; [L90] int systemActive = 1; [L356] int waterLevel = 1; [L357] int methaneLevelCritical = 0; [L445] int cleanupTimeShifts = 4; [L753] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L518] int retValue_acc ; [L519] int tmp ; [L523] FCALL select_helpers() [L524] FCALL select_features() [L525] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L525] RET, EXPR valid_product() [L525] tmp = valid_product() [L527] COND TRUE \read(tmp) [L529] FCALL setup() [L530] CALL runTest() [L512] CALL test() [L287] int splverifierCounter ; [L288] int tmp ; [L289] int tmp___0 ; [L290] int tmp___1 ; [L291] int tmp___2 ; [L294] splverifierCounter = 0 [L296] COND TRUE 1 [L298] COND TRUE splverifierCounter < 4 [L304] tmp = __VERIFIER_nondet_int() [L306] COND TRUE \read(tmp) [L308] CALL waterRise() [L374] COND TRUE waterLevel < 2 [L375] waterLevel = waterLevel + 1 [L308] RET waterRise() [L314] tmp___0 = __VERIFIER_nondet_int() [L316] COND FALSE !(\read(tmp___0)) [L324] tmp___2 = __VERIFIER_nondet_int() [L326] COND FALSE !(\read(tmp___2)) [L332] tmp___1 = __VERIFIER_nondet_int() [L334] COND TRUE \read(tmp___1) [L336] CALL stopSystem() [L263] COND FALSE !(\read(pumpRunning)) [L270] systemActive = 0 [L336] RET stopSystem() [L343] CALL timeShift() [L97] COND FALSE !(\read(pumpRunning)) [L104] COND FALSE !(\read(systemActive)) [L112] CALL __utac_acc__Specification3_spec__1() [L551] int tmp ; [L552] int tmp___0 ; [L553] int tmp___1 ; [L557] CALL, EXPR isMethaneLevelCritical() [L395] int retValue_acc ; [L398] retValue_acc = methaneLevelCritical [L399] return (retValue_acc); [L557] RET, EXPR isMethaneLevelCritical() [L557] tmp = isMethaneLevelCritical() [L559] COND FALSE !(\read(tmp)) [L563] CALL, EXPR getWaterLevel() [L427] int retValue_acc ; [L430] retValue_acc = waterLevel [L431] return (retValue_acc); [L563] RET, EXPR getWaterLevel() [L563] tmp___0 = getWaterLevel() [L565] COND TRUE tmp___0 == 2 [L567] CALL, EXPR isPumpRunning() [L196] int retValue_acc ; [L199] retValue_acc = pumpRunning [L200] return (retValue_acc); [L567] RET, EXPR isPumpRunning() [L567] tmp___1 = isPumpRunning() [L569] COND FALSE !(\read(tmp___1)) [L573] CALL __automaton_fail() [L545] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 234 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 533 SDtfs, 833 SDslu, 413 SDs, 0 SdLazy, 1915 SolverSat, 543 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 236 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...