/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:17:45,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:17:45,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:17:45,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:17:45,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:17:45,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:17:45,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:17:45,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:17:45,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:17:45,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:17:45,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:17:45,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:17:45,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:17:45,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:17:45,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:17:45,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:17:45,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:17:45,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:17:45,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:17:45,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:17:45,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:17:45,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:17:45,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:17:45,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:17:45,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:17:45,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:17:45,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:17:45,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:17:45,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:17:45,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:17:45,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:17:45,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:17:45,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:17:45,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:17:45,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:17:45,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:17:45,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:17:45,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:17:45,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:17:45,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:17:45,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:17:45,135 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 05:17:45,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:17:45,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:17:45,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:17:45,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:17:45,158 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:17:45,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:17:45,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:17:45,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:17:45,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:17:45,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:17:45,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:17:45,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:17:45,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:17:45,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:17:45,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:17:45,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:17:45,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:17:45,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:17:45,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:17:45,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:17:45,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:17:45,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:17:45,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:17:45,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:17:45,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:17:45,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:17:45,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:17:45,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:17:45,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:17:45,165 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:17:45,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:17:45,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:17:45,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:17:45,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:17:45,465 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:17:45,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c [2020-08-22 05:17:45,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0228fb33e/c328b994ee08461393dae6eacb89616a/FLAGcea6767ca [2020-08-22 05:17:46,013 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:17:46,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c [2020-08-22 05:17:46,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0228fb33e/c328b994ee08461393dae6eacb89616a/FLAGcea6767ca [2020-08-22 05:17:46,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0228fb33e/c328b994ee08461393dae6eacb89616a [2020-08-22 05:17:46,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:17:46,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:17:46,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:17:46,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:17:46,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:17:46,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:17:46" (1/1) ... [2020-08-22 05:17:46,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331f3ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:46, skipping insertion in model container [2020-08-22 05:17:46,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:17:46" (1/1) ... [2020-08-22 05:17:46,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:17:46,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:17:46,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:17:46,834 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:17:46,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:17:46,973 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:17:46,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:46 WrapperNode [2020-08-22 05:17:46,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:17:46,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:17:46,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:17:46,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:17:46,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:46" (1/1) ... [2020-08-22 05:17:46,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:46" (1/1) ... [2020-08-22 05:17:47,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:46" (1/1) ... [2020-08-22 05:17:47,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:46" (1/1) ... [2020-08-22 05:17:47,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:46" (1/1) ... [2020-08-22 05:17:47,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:46" (1/1) ... [2020-08-22 05:17:47,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:46" (1/1) ... [2020-08-22 05:17:47,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:17:47,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:17:47,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:17:47,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:17:47,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:46" (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 05:17:47,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:17:47,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:17:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:17:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:17:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:17:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:17:47,158 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:17:47,158 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-22 05:17:47,158 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:17:47,159 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:17:47,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:17:47,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:17:47,160 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:17:47,160 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 05:17:47,160 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:17:47,161 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:17:47,161 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:17:47,161 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:17:47,161 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:17:47,161 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:17:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:17:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:17:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:17:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:17:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:17:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:17:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:17:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:17:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:17:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:17:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:17:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:17:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:17:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:17:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:17:47,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:17:47,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:17:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:17:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:17:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:17:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:17:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:17:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:17:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:17:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:17:47,170 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:17:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:17:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:17:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 05:17:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:17:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:17:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:17:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:17:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:17:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:17:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:17:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:17:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:17:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-22 05:17:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:17:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:17:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:17:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:17:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:17:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:17:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:17:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:17:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:17:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:17:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:17:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:17:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:17:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:17:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:17:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:17:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:17:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:17:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:17:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:17:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:17:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:17:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:17:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:17:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:17:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:17:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:17:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:17:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:17:48,275 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:17:48,275 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:17:48,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:17:48 BoogieIcfgContainer [2020-08-22 05:17:48,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:17:48,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:17:48,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:17:48,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:17:48,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:17:46" (1/3) ... [2020-08-22 05:17:48,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612ea57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:17:48, skipping insertion in model container [2020-08-22 05:17:48,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:46" (2/3) ... [2020-08-22 05:17:48,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612ea57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:17:48, skipping insertion in model container [2020-08-22 05:17:48,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:17:48" (3/3) ... [2020-08-22 05:17:48,299 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product12.cil.c [2020-08-22 05:17:48,311 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:17:48,321 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:17:48,333 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:17:48,355 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:17:48,355 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:17:48,355 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:17:48,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:17:48,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:17:48,356 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:17:48,356 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:17:48,356 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:17:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-08-22 05:17:48,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:17:48,390 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:48,391 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 05:17:48,392 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:48,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:48,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1715921214, now seen corresponding path program 1 times [2020-08-22 05:17:48,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:48,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80474732] [2020-08-22 05:17:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,088 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:49,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:17:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:17:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:17:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:49,195 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 05:17:49,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80474732] [2020-08-22 05:17:49,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:49,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:17:49,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797805188] [2020-08-22 05:17:49,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:17:49,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:49,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:17:49,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:17:49,233 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 3 states. [2020-08-22 05:17:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:50,232 INFO L93 Difference]: Finished difference Result 240 states and 317 transitions. [2020-08-22 05:17:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:17:50,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 05:17:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:50,249 INFO L225 Difference]: With dead ends: 240 [2020-08-22 05:17:50,249 INFO L226 Difference]: Without dead ends: 131 [2020-08-22 05:17:50,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:17:50,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-22 05:17:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 100. [2020-08-22 05:17:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 05:17:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-22 05:17:50,334 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 52 [2020-08-22 05:17:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:50,334 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-22 05:17:50,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:17:50,335 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-22 05:17:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 05:17:50,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:50,339 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 05:17:50,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:17:50,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:50,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:50,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1789709038, now seen corresponding path program 1 times [2020-08-22 05:17:50,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:50,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425718403] [2020-08-22 05:17:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,726 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:17:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:17:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:17:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,786 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 05:17:50,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425718403] [2020-08-22 05:17:50,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:50,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:17:50,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317838201] [2020-08-22 05:17:50,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:17:50,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:50,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:17:50,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:17:50,791 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 4 states. [2020-08-22 05:17:51,335 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:51,909 INFO L93 Difference]: Finished difference Result 160 states and 194 transitions. [2020-08-22 05:17:51,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:17:51,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 05:17:51,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:51,912 INFO L225 Difference]: With dead ends: 160 [2020-08-22 05:17:51,912 INFO L226 Difference]: Without dead ends: 115 [2020-08-22 05:17:51,914 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 05:17:51,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-22 05:17:51,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91. [2020-08-22 05:17:51,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-22 05:17:51,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-08-22 05:17:51,945 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 53 [2020-08-22 05:17:51,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:51,946 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-08-22 05:17:51,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:17:51,946 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-08-22 05:17:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 05:17:51,948 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:51,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:17:51,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:17:51,949 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:51,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:51,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1277285199, now seen corresponding path program 1 times [2020-08-22 05:17:51,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:51,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635038526] [2020-08-22 05:17:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,268 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:52,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:17:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:17:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:17:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,386 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 05:17:52,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635038526] [2020-08-22 05:17:52,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:52,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:17:52,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516693016] [2020-08-22 05:17:52,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:17:52,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:52,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:17:52,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:17:52,389 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 8 states. [2020-08-22 05:17:52,815 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:17:53,120 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:53,374 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:53,642 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:54,374 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:55,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:55,522 INFO L93 Difference]: Finished difference Result 326 states and 401 transitions. [2020-08-22 05:17:55,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:17:55,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 05:17:55,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:55,530 INFO L225 Difference]: With dead ends: 326 [2020-08-22 05:17:55,531 INFO L226 Difference]: Without dead ends: 259 [2020-08-22 05:17:55,532 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 05:17:55,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-22 05:17:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 190. [2020-08-22 05:17:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-22 05:17:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2020-08-22 05:17:55,620 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 58 [2020-08-22 05:17:55,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:55,620 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2020-08-22 05:17:55,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:17:55,621 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2020-08-22 05:17:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 05:17:55,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:55,623 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:17:55,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:17:55,624 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:55,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2002784121, now seen corresponding path program 1 times [2020-08-22 05:17:55,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:55,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875775733] [2020-08-22 05:17:55,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,010 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:56,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:17:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 05:17:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:17:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 05:17:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,070 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 05:17:56,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875775733] [2020-08-22 05:17:56,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:56,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 05:17:56,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992086408] [2020-08-22 05:17:56,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:17:56,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:56,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:17:56,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:17:56,073 INFO L87 Difference]: Start difference. First operand 190 states and 225 transitions. Second operand 7 states. [2020-08-22 05:17:56,520 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:17:57,600 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:57,883 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:58,128 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:58,394 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:17:58,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:58,690 INFO L93 Difference]: Finished difference Result 537 states and 682 transitions. [2020-08-22 05:17:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:17:58,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-08-22 05:17:58,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:58,697 INFO L225 Difference]: With dead ends: 537 [2020-08-22 05:17:58,698 INFO L226 Difference]: Without dead ends: 371 [2020-08-22 05:17:58,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:17:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-08-22 05:17:58,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 349. [2020-08-22 05:17:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-08-22 05:17:58,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 425 transitions. [2020-08-22 05:17:58,784 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 425 transitions. Word has length 61 [2020-08-22 05:17:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:58,784 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 425 transitions. [2020-08-22 05:17:58,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:17:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 425 transitions. [2020-08-22 05:17:58,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 05:17:58,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:58,788 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] [2020-08-22 05:17:58,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:17:58,788 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:58,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:58,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1296160083, now seen corresponding path program 1 times [2020-08-22 05:17:58,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:58,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535464290] [2020-08-22 05:17:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,063 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:59,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:17:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:17:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:17:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 05:17:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 05:17:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,128 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 05:17:59,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535464290] [2020-08-22 05:17:59,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:59,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:17:59,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497516716] [2020-08-22 05:17:59,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:17:59,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:59,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:17:59,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:17:59,135 INFO L87 Difference]: Start difference. First operand 349 states and 425 transitions. Second operand 5 states. [2020-08-22 05:17:59,429 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:17:59,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:59,957 INFO L93 Difference]: Finished difference Result 642 states and 802 transitions. [2020-08-22 05:17:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 05:17:59,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-08-22 05:17:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:59,961 INFO L225 Difference]: With dead ends: 642 [2020-08-22 05:17:59,961 INFO L226 Difference]: Without dead ends: 317 [2020-08-22 05:17:59,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:17:59,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-08-22 05:18:00,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 303. [2020-08-22 05:18:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-22 05:18:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 354 transitions. [2020-08-22 05:18:00,024 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 354 transitions. Word has length 65 [2020-08-22 05:18:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:00,024 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 354 transitions. [2020-08-22 05:18:00,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:18:00,025 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 354 transitions. [2020-08-22 05:18:00,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 05:18:00,026 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:00,027 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] [2020-08-22 05:18:00,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:18:00,027 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:00,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:00,027 INFO L82 PathProgramCache]: Analyzing trace with hash -423236225, now seen corresponding path program 1 times [2020-08-22 05:18:00,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:00,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565536081] [2020-08-22 05:18:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:18:00,079 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:18:00,079 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:18:00,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:18:00,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:18:00 BoogieIcfgContainer [2020-08-22 05:18:00,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:18:00,106 INFO L168 Benchmark]: Toolchain (without parser) took 13786.59 ms. Allocated memory was 140.5 MB in the beginning and 451.9 MB in the end (delta: 311.4 MB). Free memory was 102.5 MB in the beginning and 231.3 MB in the end (delta: -128.8 MB). Peak memory consumption was 182.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:00,107 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:18:00,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.64 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 173.1 MB in the end (delta: -70.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:00,109 INFO L168 Benchmark]: Boogie Preprocessor took 85.94 ms. Allocated memory is still 203.9 MB. Free memory was 173.1 MB in the beginning and 169.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:00,110 INFO L168 Benchmark]: RCFGBuilder took 1226.01 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 169.1 MB in the beginning and 200.8 MB in the end (delta: -31.7 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:00,110 INFO L168 Benchmark]: TraceAbstraction took 11813.55 ms. Allocated memory was 237.0 MB in the beginning and 451.9 MB in the end (delta: 215.0 MB). Free memory was 200.8 MB in the beginning and 231.3 MB in the end (delta: -30.5 MB). Peak memory consumption was 184.4 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:00,114 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.64 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 173.1 MB in the end (delta: -70.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.94 ms. Allocated memory is still 203.9 MB. Free memory was 173.1 MB in the beginning and 169.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1226.01 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 169.1 MB in the beginning and 200.8 MB in the end (delta: -31.7 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11813.55 ms. Allocated memory was 237.0 MB in the beginning and 451.9 MB in the end (delta: 215.0 MB). Free memory was 200.8 MB in the beginning and 231.3 MB in the end (delta: -30.5 MB). Peak memory consumption was 184.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 890]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L306] int waterLevel = 1; [L307] int methaneLevelCritical = 0; [L593] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L790] int cleanupTimeShifts = 4; [L863] int retValue_acc ; [L864] int tmp ; [L868] FCALL select_helpers() [L869] FCALL select_features() [L870] CALL, EXPR valid_product() [L415] int retValue_acc ; [L418] retValue_acc = 1 [L419] return (retValue_acc); [L870] RET, EXPR valid_product() [L870] tmp = valid_product() [L872] COND TRUE \read(tmp) [L874] FCALL setup() [L875] CALL runTest() [L857] CALL test() [L85] int splverifierCounter ; [L86] int tmp ; [L87] int tmp___0 ; [L88] int tmp___1 ; [L89] int tmp___2 ; [L92] splverifierCounter = 0 [L94] COND TRUE 1 [L96] COND TRUE splverifierCounter < 4 [L102] tmp = __VERIFIER_nondet_int() [L104] COND TRUE \read(tmp) [L106] CALL waterRise() [L324] COND TRUE waterLevel < 2 [L325] waterLevel = waterLevel + 1 [L106] RET waterRise() [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND FALSE !(\read(tmp___2)) [L130] tmp___1 = __VERIFIER_nondet_int() [L132] COND FALSE !(\read(tmp___1)) [L141] CALL timeShift() [L165] COND FALSE !(\read(pumpRunning)) [L172] COND TRUE \read(systemActive) [L174] FCALL processEnvironment() [L180] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L345] int retValue_acc ; [L348] retValue_acc = methaneLevelCritical [L349] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L377] int retValue_acc ; [L380] retValue_acc = waterLevel [L381] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L890] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 214 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 429 SDtfs, 644 SDslu, 342 SDs, 0 SdLazy, 1355 SolverSat, 382 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 160 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 79940 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...