/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 EqDomain -i ../sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:09:43,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:09:43,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:09:43,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:09:43,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:09:43,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:09:43,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:09:43,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:09:43,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:09:43,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:09:43,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:09:43,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:09:43,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:09:43,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:09:43,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:09:43,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:09:43,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:09:43,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:09:43,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:09:43,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:09:43,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:09:43,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:09:43,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:09:43,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:09:43,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:09:43,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:09:43,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:09:43,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:09:43,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:09:43,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:09:43,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:09:43,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:09:43,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:09:43,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:09:43,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:09:43,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:09:43,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:09:43,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:09:43,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:09:43,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:09:43,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:09:43,451 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 [2023-04-01 12:09:43,474 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:09:43,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:09:43,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:09:43,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:09:43,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:09:43,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:09:43,475 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:09:43,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:09:43,476 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:09:43,476 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:09:43,476 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:09:43,476 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:09:43,476 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:09:43,476 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:09:43,476 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:09:43,477 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:09:43,477 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:09:43,477 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:09:43,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:09:43,477 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:09:43,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:09:43,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:09:43,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:09:43,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:09:43,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:09:43,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:09:43,478 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:09:43,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:09:43,478 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:09:43,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:09:43,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:09:43,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:09:43,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:09:43,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:09:43,479 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:09:43,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:09:43,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:09:43,480 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:09:43,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:09:43,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:09:43,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:09:43,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:09:43,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:09:43,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:09:43,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:09:43,759 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:09:43,760 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:09:43,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c [2023-04-01 12:09:44,990 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:09:45,266 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:09:45,267 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product49.cil.c [2023-04-01 12:09:45,277 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08845b01c/d526f6d64c2c4aef838013ab30a3d359/FLAG4a3bfe75e [2023-04-01 12:09:45,290 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08845b01c/d526f6d64c2c4aef838013ab30a3d359 [2023-04-01 12:09:45,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:09:45,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:09:45,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:09:45,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:09:45,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:09:45,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:45" (1/1) ... [2023-04-01 12:09:45,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e533a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45, skipping insertion in model container [2023-04-01 12:09:45,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:45" (1/1) ... [2023-04-01 12:09:45,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:09:45,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:09:45,490 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_spec5_product49.cil.c[6886,6899] [2023-04-01 12:09:45,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:09:45,570 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:09:45,592 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_spec5_product49.cil.c[6886,6899] [2023-04-01 12:09:45,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:09:45,638 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:09:45,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45 WrapperNode [2023-04-01 12:09:45,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:09:45,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:09:45,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:09:45,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:09:45,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45" (1/1) ... [2023-04-01 12:09:45,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45" (1/1) ... [2023-04-01 12:09:45,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45" (1/1) ... [2023-04-01 12:09:45,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45" (1/1) ... [2023-04-01 12:09:45,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45" (1/1) ... [2023-04-01 12:09:45,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45" (1/1) ... [2023-04-01 12:09:45,744 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45" (1/1) ... [2023-04-01 12:09:45,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45" (1/1) ... [2023-04-01 12:09:45,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:09:45,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:09:45,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:09:45,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:09:45,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45" (1/1) ... [2023-04-01 12:09:45,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:09:45,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:45,801 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) [2023-04-01 12:09:45,821 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 [2023-04-01 12:09:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:09:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:09:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:09:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:09:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:09:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:09:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:09:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:09:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:09:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:09:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:09:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:09:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:09:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:09:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 12:09:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:09:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:09:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:09:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:09:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:09:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:09:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:09:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:09:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 12:09:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:09:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:09:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:09:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:09:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:09:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:09:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:09:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:09:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:09:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:09:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:09:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:09:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:09:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:09:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:09:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:09:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:09:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:09:45,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:09:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:09:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:09:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:09:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:09:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:09:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:09:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:09:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:09:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:09:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:09:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 12:09:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:09:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:09:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:09:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:09:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:09:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:09:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:09:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:09:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:09:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:09:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:09:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 12:09:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:09:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:09:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:09:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:09:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:09:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:09:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:09:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:09:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:09:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:09:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:09:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:09:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:09:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:09:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:09:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:09:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:09:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:09:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:09:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:09:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:09:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:09:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:09:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:09:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:09:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:09:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:09:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:09:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:09:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:09:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:09:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:09:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:09:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:09:46,027 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:09:46,055 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:09:46,695 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:09:46,904 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:09:46,904 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:09:46,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:46 BoogieIcfgContainer [2023-04-01 12:09:46,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:09:46,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:09:46,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:09:46,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:09:46,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:09:45" (1/3) ... [2023-04-01 12:09:46,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6c3a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:46, skipping insertion in model container [2023-04-01 12:09:46,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:45" (2/3) ... [2023-04-01 12:09:46,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6c3a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:46, skipping insertion in model container [2023-04-01 12:09:46,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:46" (3/3) ... [2023-04-01 12:09:46,918 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2023-04-01 12:09:46,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:09:46,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:09:46,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:09:47,003 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;@1de6a4f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:09:47,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:09:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 78 states have internal predecessors, (83), 48 states have call successors, (48), 30 states have call predecessors, (48), 30 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2023-04-01 12:09:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 12:09:47,016 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:47,019 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:47,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:47,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:47,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2081292438, now seen corresponding path program 1 times [2023-04-01 12:09:47,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:47,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871160767] [2023-04-01 12:09:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:47,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:47,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:47,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871160767] [2023-04-01 12:09:47,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871160767] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:47,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:47,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:09:47,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051959909] [2023-04-01 12:09:47,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:47,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:09:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:09:47,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:09:47,361 INFO L87 Difference]: Start difference. First operand has 147 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 78 states have internal predecessors, (83), 48 states have call successors, (48), 30 states have call predecessors, (48), 30 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:47,454 INFO L93 Difference]: Finished difference Result 224 states and 269 transitions. [2023-04-01 12:09:47,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:09:47,456 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 52 [2023-04-01 12:09:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:47,466 INFO L225 Difference]: With dead ends: 224 [2023-04-01 12:09:47,467 INFO L226 Difference]: Without dead ends: 114 [2023-04-01 12:09:47,471 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 [2023-04-01 12:09:47,475 INFO L413 NwaCegarLoop]: 122 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, 122 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:47,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:09:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-04-01 12:09:47,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-04-01 12:09:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 66 states have internal predecessors, (69), 33 states have call successors, (33), 28 states have call predecessors, (33), 23 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-01 12:09:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2023-04-01 12:09:47,544 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 52 [2023-04-01 12:09:47,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:47,544 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2023-04-01 12:09:47,545 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2023-04-01 12:09:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 12:09:47,547 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:47,547 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:47,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:09:47,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:47,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:47,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1770452066, now seen corresponding path program 1 times [2023-04-01 12:09:47,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:47,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299671819] [2023-04-01 12:09:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:47,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:47,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:47,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299671819] [2023-04-01 12:09:47,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299671819] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:47,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:47,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:09:47,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548000925] [2023-04-01 12:09:47,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:47,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:09:47,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:47,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:09:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:09:47,696 INFO L87 Difference]: Start difference. First operand 114 states and 130 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:47,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:47,761 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2023-04-01 12:09:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:09:47,761 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 53 [2023-04-01 12:09:47,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:47,763 INFO L225 Difference]: With dead ends: 182 [2023-04-01 12:09:47,763 INFO L226 Difference]: Without dead ends: 106 [2023-04-01 12:09:47,764 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 [2023-04-01 12:09:47,765 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:47,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 194 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:09:47,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-04-01 12:09:47,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-04-01 12:09:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 61 states have internal predecessors, (63), 30 states have call successors, (30), 27 states have call predecessors, (30), 23 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-01 12:09:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2023-04-01 12:09:47,776 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 53 [2023-04-01 12:09:47,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:47,776 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2023-04-01 12:09:47,778 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:47,779 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2023-04-01 12:09:47,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-01 12:09:47,787 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:47,787 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:47,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:09:47,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:47,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:47,789 INFO L85 PathProgramCache]: Analyzing trace with hash 809349491, now seen corresponding path program 1 times [2023-04-01 12:09:47,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:47,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691569168] [2023-04-01 12:09:47,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:47,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:48,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:48,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691569168] [2023-04-01 12:09:48,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691569168] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:48,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:48,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:09:48,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186570694] [2023-04-01 12:09:48,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:48,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:09:48,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:09:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:09:48,019 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:09:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:48,259 INFO L93 Difference]: Finished difference Result 187 states and 214 transitions. [2023-04-01 12:09:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:09:48,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 55 [2023-04-01 12:09:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:48,265 INFO L225 Difference]: With dead ends: 187 [2023-04-01 12:09:48,265 INFO L226 Difference]: Without dead ends: 106 [2023-04-01 12:09:48,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:09:48,276 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 160 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:48,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 279 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:09:48,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-04-01 12:09:48,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-04-01 12:09:48,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 60 states have internal predecessors, (62), 30 states have call successors, (30), 27 states have call predecessors, (30), 23 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-01 12:09:48,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2023-04-01 12:09:48,298 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 55 [2023-04-01 12:09:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:48,300 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2023-04-01 12:09:48,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:09:48,300 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2023-04-01 12:09:48,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 12:09:48,301 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:48,301 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:48,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:09:48,302 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:48,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:48,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2045226469, now seen corresponding path program 1 times [2023-04-01 12:09:48,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:48,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738062823] [2023-04-01 12:09:48,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:48,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:48,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:48,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:48,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738062823] [2023-04-01 12:09:48,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738062823] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:48,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:48,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:09:48,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481470080] [2023-04-01 12:09:48,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:48,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:09:48,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:48,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:09:48,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:09:48,471 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 12:09:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:48,810 INFO L93 Difference]: Finished difference Result 275 states and 323 transitions. [2023-04-01 12:09:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:09:48,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 68 [2023-04-01 12:09:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:48,813 INFO L225 Difference]: With dead ends: 275 [2023-04-01 12:09:48,813 INFO L226 Difference]: Without dead ends: 194 [2023-04-01 12:09:48,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:09:48,815 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 141 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:48,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 138 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:09:48,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-04-01 12:09:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 179. [2023-04-01 12:09:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 101 states have internal predecessors, (110), 43 states have call successors, (43), 40 states have call predecessors, (43), 41 states have return successors, (46), 42 states have call predecessors, (46), 39 states have call successors, (46) [2023-04-01 12:09:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2023-04-01 12:09:48,878 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 68 [2023-04-01 12:09:48,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:48,879 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2023-04-01 12:09:48,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 12:09:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2023-04-01 12:09:48,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-01 12:09:48,882 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:48,882 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:48,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:09:48,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:48,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:48,884 INFO L85 PathProgramCache]: Analyzing trace with hash 808321241, now seen corresponding path program 1 times [2023-04-01 12:09:48,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:48,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115045368] [2023-04-01 12:09:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:48,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:49,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:49,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115045368] [2023-04-01 12:09:49,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115045368] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:49,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:49,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:09:49,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276165773] [2023-04-01 12:09:49,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:49,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:09:49,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:49,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:09:49,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:09:49,326 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand has 12 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-01 12:09:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:49,760 INFO L93 Difference]: Finished difference Result 476 states and 543 transitions. [2023-04-01 12:09:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 12:09:49,761 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 77 [2023-04-01 12:09:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:49,768 INFO L225 Difference]: With dead ends: 476 [2023-04-01 12:09:49,768 INFO L226 Difference]: Without dead ends: 322 [2023-04-01 12:09:49,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-04-01 12:09:49,772 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 130 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:49,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 827 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:09:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-04-01 12:09:49,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 312. [2023-04-01 12:09:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 170 states have (on average 1.1764705882352942) internal successors, (200), 181 states have internal predecessors, (200), 73 states have call successors, (73), 68 states have call predecessors, (73), 68 states have return successors, (82), 72 states have call predecessors, (82), 69 states have call successors, (82) [2023-04-01 12:09:49,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 355 transitions. [2023-04-01 12:09:49,819 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 355 transitions. Word has length 77 [2023-04-01 12:09:49,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:49,820 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 355 transitions. [2023-04-01 12:09:49,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-01 12:09:49,820 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 355 transitions. [2023-04-01 12:09:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-01 12:09:49,822 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:49,823 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:49,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:09:49,823 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:49,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1566434274, now seen corresponding path program 1 times [2023-04-01 12:09:49,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:49,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477969580] [2023-04-01 12:09:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:09:50,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:50,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477969580] [2023-04-01 12:09:50,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477969580] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:50,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:50,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:09:50,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526969685] [2023-04-01 12:09:50,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:50,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:09:50,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:50,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:09:50,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:09:50,012 INFO L87 Difference]: Start difference. First operand 312 states and 355 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-01 12:09:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:50,340 INFO L93 Difference]: Finished difference Result 615 states and 717 transitions. [2023-04-01 12:09:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:09:50,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 77 [2023-04-01 12:09:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:50,343 INFO L225 Difference]: With dead ends: 615 [2023-04-01 12:09:50,343 INFO L226 Difference]: Without dead ends: 328 [2023-04-01 12:09:50,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:09:50,345 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 110 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:50,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 216 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:09:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-04-01 12:09:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 309. [2023-04-01 12:09:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 167 states have (on average 1.1437125748502994) internal successors, (191), 178 states have internal predecessors, (191), 73 states have call successors, (73), 68 states have call predecessors, (73), 68 states have return successors, (82), 72 states have call predecessors, (82), 69 states have call successors, (82) [2023-04-01 12:09:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 346 transitions. [2023-04-01 12:09:50,376 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 346 transitions. Word has length 77 [2023-04-01 12:09:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:50,376 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 346 transitions. [2023-04-01 12:09:50,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-01 12:09:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 346 transitions. [2023-04-01 12:09:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 12:09:50,378 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:50,378 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:50,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:09:50,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:50,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:50,379 INFO L85 PathProgramCache]: Analyzing trace with hash -512960543, now seen corresponding path program 1 times [2023-04-01 12:09:50,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:50,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122903894] [2023-04-01 12:09:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:50,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:50,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:50,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122903894] [2023-04-01 12:09:50,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122903894] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:50,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:50,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:09:50,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656241825] [2023-04-01 12:09:50,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:50,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:09:50,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:50,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:09:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:09:50,698 INFO L87 Difference]: Start difference. First operand 309 states and 346 transitions. Second operand has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-01 12:09:51,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:51,391 INFO L93 Difference]: Finished difference Result 950 states and 1093 transitions. [2023-04-01 12:09:51,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 12:09:51,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 80 [2023-04-01 12:09:51,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:51,395 INFO L225 Difference]: With dead ends: 950 [2023-04-01 12:09:51,395 INFO L226 Difference]: Without dead ends: 720 [2023-04-01 12:09:51,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-04-01 12:09:51,397 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 270 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:51,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 234 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:09:51,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2023-04-01 12:09:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 616. [2023-04-01 12:09:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 338 states have (on average 1.150887573964497) internal successors, (389), 358 states have internal predecessors, (389), 140 states have call successors, (140), 131 states have call predecessors, (140), 137 states have return successors, (168), 144 states have call predecessors, (168), 136 states have call successors, (168) [2023-04-01 12:09:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 697 transitions. [2023-04-01 12:09:51,465 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 697 transitions. Word has length 80 [2023-04-01 12:09:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:51,465 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 697 transitions. [2023-04-01 12:09:51,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-01 12:09:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 697 transitions. [2023-04-01 12:09:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-01 12:09:51,467 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:51,468 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:51,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:09:51,468 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:51,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:51,468 INFO L85 PathProgramCache]: Analyzing trace with hash 950768582, now seen corresponding path program 1 times [2023-04-01 12:09:51,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:51,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818661951] [2023-04-01 12:09:51,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:51,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 12:09:51,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818661951] [2023-04-01 12:09:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818661951] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:09:51,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636660394] [2023-04-01 12:09:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:51,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:51,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:51,671 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:09:51,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 12:09:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:51,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 12:09:51,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:09:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:09:52,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:09:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 12:09:52,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636660394] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:09:52,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [880189719] [2023-04-01 12:09:52,512 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2023-04-01 12:09:52,513 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:09:52,516 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:09:52,521 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:09:52,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:09:53,082 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:09:53,135 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 129 for LOIs [2023-04-01 12:09:55,367 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 129 for LOIs [2023-04-01 12:09:55,765 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 129 for LOIs [2023-04-01 12:10:01,529 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 128 for LOIs [2023-04-01 12:10:01,603 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 140 for LOIs [2023-04-01 12:10:03,020 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 123 for LOIs [2023-04-01 12:10:03,039 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 128 for LOIs [2023-04-01 12:10:04,363 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 126 for LOIs [2023-04-01 12:10:05,231 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 119 for LOIs [2023-04-01 12:10:05,563 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 119 for LOIs [2023-04-01 12:10:05,597 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 131 for LOIs [2023-04-01 12:10:05,621 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 122 for LOIs [2023-04-01 12:10:05,640 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 122 for LOIs [2023-04-01 12:10:05,935 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 122 for LOIs [2023-04-01 12:10:05,952 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:10:05,966 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:10:05,979 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 118 for LOIs [2023-04-01 12:10:06,443 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 128 for LOIs [2023-04-01 12:10:06,463 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 118 for LOIs [2023-04-01 12:10:06,483 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 134 for LOIs [2023-04-01 12:10:06,785 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 123 for LOIs [2023-04-01 12:10:06,838 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 123 for LOIs [2023-04-01 12:10:06,857 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:10:06,875 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:10:06,888 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:10:26,652 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7764#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= (select |#valid| 9) 1) (not (= ~pumpRunning~0 0)) (= (select |#length| 12) 25) (<= ~pumpRunning~0 2147483647) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= 30 (select |#length| 4)) (not (= 2 ~waterLevel~0)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= 1 ~systemActive~0) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= ~switchedOnBeforeTS~0 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 12:10:26,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 12:10:26,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:10:26,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-04-01 12:10:26,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015952132] [2023-04-01 12:10:26,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 12:10:26,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 12:10:26,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:10:26,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 12:10:26,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=5350, Unknown=0, NotChecked=0, Total=5852 [2023-04-01 12:10:26,656 INFO L87 Difference]: Start difference. First operand 616 states and 697 transitions. Second operand has 19 states, 12 states have (on average 9.333333333333334) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) [2023-04-01 12:10:27,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:10:27,701 INFO L93 Difference]: Finished difference Result 1213 states and 1407 transitions. [2023-04-01 12:10:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 12:10:27,702 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 9.333333333333334) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) Word has length 131 [2023-04-01 12:10:27,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:10:27,706 INFO L225 Difference]: With dead ends: 1213 [2023-04-01 12:10:27,706 INFO L226 Difference]: Without dead ends: 676 [2023-04-01 12:10:27,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 320 SyntacticMatches, 13 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3774 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=666, Invalid=8076, Unknown=0, NotChecked=0, Total=8742 [2023-04-01 12:10:27,712 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 361 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:10:27,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1389 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:10:27,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-04-01 12:10:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 595. [2023-04-01 12:10:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 326 states have (on average 1.1441717791411044) internal successors, (373), 353 states have internal predecessors, (373), 137 states have call successors, (137), 130 states have call predecessors, (137), 131 states have return successors, (158), 131 states have call predecessors, (158), 133 states have call successors, (158) [2023-04-01 12:10:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 668 transitions. [2023-04-01 12:10:27,775 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 668 transitions. Word has length 131 [2023-04-01 12:10:27,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:10:27,776 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 668 transitions. [2023-04-01 12:10:27,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 9.333333333333334) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) [2023-04-01 12:10:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 668 transitions. [2023-04-01 12:10:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-04-01 12:10:27,780 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:10:27,780 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:10:27,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 12:10:27,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:10:27,988 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:10:27,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:10:27,988 INFO L85 PathProgramCache]: Analyzing trace with hash 3381391, now seen corresponding path program 1 times [2023-04-01 12:10:27,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:10:27,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792034852] [2023-04-01 12:10:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:27,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:10:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-04-01 12:10:28,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:10:28,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792034852] [2023-04-01 12:10:28,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792034852] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:10:28,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860285714] [2023-04-01 12:10:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:28,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:10:28,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:10:28,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:10:28,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 12:10:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:28,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 12:10:28,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:10:28,587 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 12:10:28,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:10:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-04-01 12:10:28,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860285714] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:10:28,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1539354820] [2023-04-01 12:10:28,929 INFO L159 IcfgInterpreter]: Started Sifa with 98 locations of interest [2023-04-01 12:10:28,929 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:10:28,929 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:10:28,929 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:10:28,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:10:29,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:10:29,182 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 129 for LOIs [2023-04-01 12:10:30,183 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 129 for LOIs [2023-04-01 12:10:30,491 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 129 for LOIs