/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:55:07,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:55:07,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:55:07,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:55:07,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:55:07,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:55:07,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:55:07,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:55:07,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:55:07,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:55:07,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:55:07,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:55:07,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:55:07,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:55:07,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:55:07,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:55:07,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:55:07,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:55:07,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:55:07,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:55:07,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:55:07,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:55:07,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:55:07,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:55:07,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:55:07,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:55:07,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:55:07,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:55:07,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:55:07,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:55:07,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:55:07,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:55:07,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:55:07,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:55:07,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:55:07,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:55:07,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:55:07,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:55:07,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:55:07,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:55:07,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:55:07,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 23:55:07,650 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:55:07,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:55:07,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:55:07,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:55:07,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:55:07,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:55:07,652 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:55:07,652 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:55:07,652 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:55:07,652 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:55:07,652 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:55:07,653 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:55:07,653 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:55:07,653 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:55:07,653 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:55:07,653 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:55:07,653 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:55:07,653 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:55:07,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:55:07,655 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:55:07,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:55:07,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:55:07,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:55:07,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:55:07,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:55:07,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:55:07,655 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:55:07,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:55:07,656 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:55:07,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:55:07,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:55:07,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:55:07,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:55:07,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:55:07,656 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:55:07,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:55:07,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:55:07,657 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:55:07,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:55:07,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:55:07,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:55:07,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:55:07,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:55:07,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:55:07,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:55:07,876 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:55:07,877 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:55:07,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c [2023-03-31 23:55:08,980 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:55:09,171 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:55:09,171 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c [2023-03-31 23:55:09,181 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e676ed77/210d34d571aa4803979ccb6748911bcb/FLAG8d414f45b [2023-03-31 23:55:09,194 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e676ed77/210d34d571aa4803979ccb6748911bcb [2023-03-31 23:55:09,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:55:09,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:55:09,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:55:09,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:55:09,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:55:09,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:55:09" (1/1) ... [2023-03-31 23:55:09,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625d4c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09, skipping insertion in model container [2023-03-31 23:55:09,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:55:09" (1/1) ... [2023-03-31 23:55:09,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:55:09,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:55:09,459 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c[15143,15156] [2023-03-31 23:55:09,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:55:09,494 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:55:09,545 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c[15143,15156] [2023-03-31 23:55:09,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:55:09,573 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:55:09,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09 WrapperNode [2023-03-31 23:55:09,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:55:09,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:55:09,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:55:09,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:55:09,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09" (1/1) ... [2023-03-31 23:55:09,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09" (1/1) ... [2023-03-31 23:55:09,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09" (1/1) ... [2023-03-31 23:55:09,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09" (1/1) ... [2023-03-31 23:55:09,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09" (1/1) ... [2023-03-31 23:55:09,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09" (1/1) ... [2023-03-31 23:55:09,675 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09" (1/1) ... [2023-03-31 23:55:09,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09" (1/1) ... [2023-03-31 23:55:09,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:55:09,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:55:09,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:55:09,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:55:09,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09" (1/1) ... [2023-03-31 23:55:09,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:55:09,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:55:09,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 23:55:09,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 23:55:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:55:09,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:55:09,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:55:09,747 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:55:09,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:55:09,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:55:09,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:55:09,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:55:09,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:55:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:55:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 23:55:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 23:55:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 23:55:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 23:55:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 23:55:09,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 23:55:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-03-31 23:55:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-03-31 23:55:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:55:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:55:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:55:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:55:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:55:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:55:09,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:55:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:55:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:55:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-03-31 23:55:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:55:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:55:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:55:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-03-31 23:55:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 23:55:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 23:55:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2023-03-31 23:55:09,751 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 23:55:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 23:55:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 23:55:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 23:55:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 23:55:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-03-31 23:55:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-03-31 23:55:09,752 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-03-31 23:55:09,753 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:55:09,753 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:55:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:55:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:55:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:55:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:55:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:55:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:55:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:55:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:55:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:55:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:55:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:55:09,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:55:09,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:55:09,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:55:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:55:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:55:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:55:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:55:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:55:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 23:55:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 23:55:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 23:55:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 23:55:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 23:55:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 23:55:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-03-31 23:55:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-03-31 23:55:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:55:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:55:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 23:55:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:55:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:55:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:55:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:55:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:55:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:55:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:55:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:55:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:55:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:55:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 23:55:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-03-31 23:55:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-03-31 23:55:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 23:55:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 23:55:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 23:55:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-03-31 23:55:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-03-31 23:55:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 23:55:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-03-31 23:55:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2023-03-31 23:55:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 23:55:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:55:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:55:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:55:09,942 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:55:09,944 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:55:10,422 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:55:10,566 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:55:10,567 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 23:55:10,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:55:10 BoogieIcfgContainer [2023-03-31 23:55:10,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:55:10,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:55:10,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:55:10,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:55:10,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:55:09" (1/3) ... [2023-03-31 23:55:10,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a65138e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:55:10, skipping insertion in model container [2023-03-31 23:55:10,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:09" (2/3) ... [2023-03-31 23:55:10,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a65138e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:55:10, skipping insertion in model container [2023-03-31 23:55:10,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:55:10" (3/3) ... [2023-03-31 23:55:10,575 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product59.cil.c [2023-03-31 23:55:10,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:55:10,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:55:10,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:55:10,647 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6eb24e27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:55:10,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:55:10,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 91 states have internal predecessors, (97), 51 states have call successors, (51), 32 states have call predecessors, (51), 32 states have return successors, (51), 47 states have call predecessors, (51), 51 states have call successors, (51) [2023-03-31 23:55:10,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-03-31 23:55:10,658 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:10,659 INFO L195 NwaCegarLoop]: 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] [2023-03-31 23:55:10,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:10,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:10,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1661097802, now seen corresponding path program 1 times [2023-03-31 23:55:10,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:10,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13738331] [2023-03-31 23:55:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:55:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:55:10,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:55:10,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13738331] [2023-03-31 23:55:10,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13738331] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:55:10,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:55:10,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 23:55:10,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930791154] [2023-03-31 23:55:10,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:55:10,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 23:55:10,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:10,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 23:55:10,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:55:10,949 INFO L87 Difference]: Start difference. First operand has 162 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 91 states have internal predecessors, (97), 51 states have call successors, (51), 32 states have call predecessors, (51), 32 states have return successors, (51), 47 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:11,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:11,053 INFO L93 Difference]: Finished difference Result 257 states and 312 transitions. [2023-03-31 23:55:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 23:55:11,057 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2023-03-31 23:55:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:11,067 INFO L225 Difference]: With dead ends: 257 [2023-03-31 23:55:11,067 INFO L226 Difference]: Without dead ends: 129 [2023-03-31 23:55:11,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:55:11,074 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:11,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:55:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-03-31 23:55:11,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-03-31 23:55:11,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 79 states have internal predecessors, (83), 36 states have call successors, (36), 30 states have call predecessors, (36), 25 states have return successors, (31), 27 states have call predecessors, (31), 31 states have call successors, (31) [2023-03-31 23:55:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2023-03-31 23:55:11,139 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2023-03-31 23:55:11,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:11,139 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2023-03-31 23:55:11,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2023-03-31 23:55:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-03-31 23:55:11,143 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:11,143 INFO L195 NwaCegarLoop]: 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] [2023-03-31 23:55:11,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:55:11,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:11,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash 646176141, now seen corresponding path program 1 times [2023-03-31 23:55:11,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:11,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476313963] [2023-03-31 23:55:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:11,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:55:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:55:11,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:55:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476313963] [2023-03-31 23:55:11,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476313963] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:55:11,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:55:11,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:55:11,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254162053] [2023-03-31 23:55:11,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:55:11,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:55:11,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:55:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:55:11,281 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:11,347 INFO L93 Difference]: Finished difference Result 208 states and 240 transitions. [2023-03-31 23:55:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:55:11,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2023-03-31 23:55:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:11,349 INFO L225 Difference]: With dead ends: 208 [2023-03-31 23:55:11,349 INFO L226 Difference]: Without dead ends: 121 [2023-03-31 23:55:11,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:55:11,350 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 11 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:11,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 228 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:55:11,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-03-31 23:55:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-03-31 23:55:11,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 74 states have internal predecessors, (77), 33 states have call successors, (33), 29 states have call predecessors, (33), 25 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2023-03-31 23:55:11,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2023-03-31 23:55:11,359 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 48 [2023-03-31 23:55:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:11,359 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2023-03-31 23:55:11,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2023-03-31 23:55:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-03-31 23:55:11,367 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:11,368 INFO L195 NwaCegarLoop]: 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] [2023-03-31 23:55:11,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:55:11,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:11,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash 480257901, now seen corresponding path program 1 times [2023-03-31 23:55:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:11,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800266299] [2023-03-31 23:55:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:11,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:55:11,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:55:11,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:55:11,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800266299] [2023-03-31 23:55:11,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800266299] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:55:11,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:55:11,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:55:11,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411171962] [2023-03-31 23:55:11,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:55:11,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:55:11,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:11,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:55:11,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:55:11,584 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:55:11,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:11,866 INFO L93 Difference]: Finished difference Result 368 states and 436 transitions. [2023-03-31 23:55:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 23:55:11,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2023-03-31 23:55:11,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:11,869 INFO L225 Difference]: With dead ends: 368 [2023-03-31 23:55:11,869 INFO L226 Difference]: Without dead ends: 269 [2023-03-31 23:55:11,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-03-31 23:55:11,870 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 294 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:11,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 545 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:55:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-03-31 23:55:11,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 261. [2023-03-31 23:55:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 140 states have (on average 1.2714285714285714) internal successors, (178), 164 states have internal predecessors, (178), 67 states have call successors, (67), 59 states have call predecessors, (67), 53 states have return successors, (64), 51 states have call predecessors, (64), 63 states have call successors, (64) [2023-03-31 23:55:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 309 transitions. [2023-03-31 23:55:11,893 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 309 transitions. Word has length 51 [2023-03-31 23:55:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:11,893 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 309 transitions. [2023-03-31 23:55:11,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:55:11,893 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 309 transitions. [2023-03-31 23:55:11,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-03-31 23:55:11,895 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:11,895 INFO L195 NwaCegarLoop]: 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] [2023-03-31 23:55:11,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:55:11,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:11,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:11,895 INFO L85 PathProgramCache]: Analyzing trace with hash 262027922, now seen corresponding path program 1 times [2023-03-31 23:55:11,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:11,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230313878] [2023-03-31 23:55:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:11,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:55:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:55:12,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:55:12,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230313878] [2023-03-31 23:55:12,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230313878] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:55:12,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:55:12,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:55:12,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279121382] [2023-03-31 23:55:12,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:55:12,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:55:12,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:12,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:55:12,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:55:12,051 INFO L87 Difference]: Start difference. First operand 261 states and 309 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-03-31 23:55:12,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:12,185 INFO L93 Difference]: Finished difference Result 727 states and 886 transitions. [2023-03-31 23:55:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 23:55:12,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2023-03-31 23:55:12,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:12,188 INFO L225 Difference]: With dead ends: 727 [2023-03-31 23:55:12,189 INFO L226 Difference]: Without dead ends: 488 [2023-03-31 23:55:12,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:55:12,190 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 97 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:12,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 531 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:55:12,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-03-31 23:55:12,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 464. [2023-03-31 23:55:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 255 states have (on average 1.2745098039215685) internal successors, (325), 296 states have internal predecessors, (325), 116 states have call successors, (116), 100 states have call predecessors, (116), 92 states have return successors, (118), 88 states have call predecessors, (118), 112 states have call successors, (118) [2023-03-31 23:55:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 559 transitions. [2023-03-31 23:55:12,226 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 559 transitions. Word has length 56 [2023-03-31 23:55:12,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:12,227 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 559 transitions. [2023-03-31 23:55:12,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-03-31 23:55:12,227 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 559 transitions. [2023-03-31 23:55:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 23:55:12,241 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:12,241 INFO L195 NwaCegarLoop]: 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] [2023-03-31 23:55:12,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 23:55:12,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:12,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash 619025133, now seen corresponding path program 1 times [2023-03-31 23:55:12,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:12,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385731135] [2023-03-31 23:55:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:12,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:55:12,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 23:55:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:55:12,324 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 23:55:12,324 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 23:55:12,325 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:55:12,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 23:55:12,328 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-03-31 23:55:12,330 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:55:12,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:55:12 BoogieIcfgContainer [2023-03-31 23:55:12,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:55:12,385 INFO L158 Benchmark]: Toolchain (without parser) took 3188.37ms. Allocated memory was 178.3MB in the beginning and 277.9MB in the end (delta: 99.6MB). Free memory was 127.4MB in the beginning and 164.9MB in the end (delta: -37.5MB). Peak memory consumption was 63.6MB. Max. memory is 8.0GB. [2023-03-31 23:55:12,385 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 124.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:55:12,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.51ms. Allocated memory is still 178.3MB. Free memory was 127.1MB in the beginning and 108.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-03-31 23:55:12,386 INFO L158 Benchmark]: Boogie Preprocessor took 108.29ms. Allocated memory is still 178.3MB. Free memory was 108.2MB in the beginning and 104.7MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-03-31 23:55:12,386 INFO L158 Benchmark]: RCFGBuilder took 886.57ms. Allocated memory was 178.3MB in the beginning and 277.9MB in the end (delta: 99.6MB). Free memory was 104.7MB in the beginning and 199.5MB in the end (delta: -94.8MB). Peak memory consumption was 20.6MB. Max. memory is 8.0GB. [2023-03-31 23:55:12,386 INFO L158 Benchmark]: TraceAbstraction took 1814.12ms. Allocated memory is still 277.9MB. Free memory was 199.0MB in the beginning and 164.9MB in the end (delta: 34.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-03-31 23:55:12,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 178.3MB. Free memory is still 124.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 374.51ms. Allocated memory is still 178.3MB. Free memory was 127.1MB in the beginning and 108.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 108.29ms. Allocated memory is still 178.3MB. Free memory was 108.2MB in the beginning and 104.7MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 886.57ms. Allocated memory was 178.3MB in the beginning and 277.9MB in the end (delta: 99.6MB). Free memory was 104.7MB in the beginning and 199.5MB in the end (delta: -94.8MB). Peak memory consumption was 20.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1814.12ms. Allocated memory is still 277.9MB. Free memory was 199.0MB in the beginning and 164.9MB in the end (delta: 34.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 704]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L424] int waterLevel = 1; [L425] int methaneLevelCritical = 0; [L527] int cleanupTimeShifts = 4; [L779] int pumpRunning = 0; [L780] int systemActive = 1; [L606] int retValue_acc ; [L607] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L611] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L612] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L613] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L655] int retValue_acc ; [L658] retValue_acc = 1 [L659] return (retValue_acc); [L613] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L613] tmp = valid_product() [L615] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L617] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L618] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L597] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L711] int splverifierCounter ; [L712] int tmp ; [L713] int tmp___0 ; [L714] int tmp___1 ; [L715] int tmp___2 ; [L718] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L720] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L722] COND TRUE splverifierCounter < 4 [L728] tmp = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L732] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L442] COND TRUE waterLevel < 2 [L443] waterLevel = waterLevel + 1 [L732] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L738] tmp___0 = __VERIFIER_nondet_int() [L740] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L748] tmp___2 = __VERIFIER_nondet_int() [L750] COND FALSE !(\read(tmp___2)) [L754] tmp___1 = __VERIFIER_nondet_int() [L756] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L758] CALL stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L997] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L1004] systemActive = 0 [L758] RET stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=0, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L765] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L786] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L793] COND FALSE !(\read(systemActive)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L801] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L667] int tmp ; [L668] int tmp___0 ; [L669] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L673] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L463] int retValue_acc ; [L466] retValue_acc = methaneLevelCritical [L467] return (retValue_acc); [L673] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L673] tmp = isMethaneLevelCritical() [L675] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L679] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L495] int retValue_acc ; [L498] retValue_acc = waterLevel [L499] return (retValue_acc); [L679] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L679] tmp___0 = getWaterLevel() [L681] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L683] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L911] int retValue_acc ; [L914] retValue_acc = pumpRunning [L915] return (retValue_acc); [L683] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L683] tmp___1 = isPumpRunning() [L685] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L689] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L704] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 201 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 408 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 402 mSDsluCounter, 1446 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 918 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 492 IncrementalHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 528 mSDtfsCounter, 492 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=464occurred in iteration=4, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-03-31 23:55:12,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...