/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:52:26,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:52:26,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:52:26,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:52:26,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:52:26,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:52:26,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:52:26,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:52:26,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:52:26,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:52:26,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:52:26,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:52:26,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:52:26,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:52:26,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:52:26,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:52:26,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:52:26,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:52:26,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:52:26,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:52:26,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:52:26,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:52:26,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:52:26,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:52:26,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:52:26,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:52:26,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:52:26,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:52:26,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:52:26,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:52:26,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:52:26,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:52:26,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:52:26,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:52:26,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:52:26,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:52:26,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:52:26,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:52:26,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:52:26,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:52:26,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:52:26,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 23:52:26,858 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:52:26,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:52:26,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:52:26,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:52:26,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:52:26,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:52:26,860 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:52:26,860 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:52:26,860 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:52:26,860 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:52:26,860 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:52:26,861 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:52:26,861 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:52:26,861 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:52:26,861 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:52:26,861 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:52:26,861 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:52:26,861 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:52:26,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:52:26,862 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:52:26,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:52:26,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:52:26,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:52:26,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:52:26,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:52:26,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:52:26,862 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:52:26,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:52:26,862 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:52:26,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:52:26,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:52:26,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:52:26,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:52:26,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:52:26,863 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:52:26,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:52:26,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:52:26,863 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:52:26,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:52:26,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:52:26,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:52:26,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:52:27,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:52:27,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:52:27,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:52:27,018 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:52:27,018 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:52:27,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2023-03-31 23:52:28,077 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:52:28,246 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:52:28,247 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2023-03-31 23:52:28,254 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee53bf24a/8a58b2f387a94f3fbdcc88b9d6a6290b/FLAGd1b634bf4 [2023-03-31 23:52:28,264 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee53bf24a/8a58b2f387a94f3fbdcc88b9d6a6290b [2023-03-31 23:52:28,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:52:28,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:52:28,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:52:28,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:52:28,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:52:28,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:52:28" (1/1) ... [2023-03-31 23:52:28,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ac8091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28, skipping insertion in model container [2023-03-31 23:52:28,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:52:28" (1/1) ... [2023-03-31 23:52:28,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:52:28,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:52:28,483 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_spec1_product34.cil.c[12584,12597] [2023-03-31 23:52:28,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:52:28,527 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:52:28,572 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_spec1_product34.cil.c[12584,12597] [2023-03-31 23:52:28,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:52:28,606 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:52:28,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28 WrapperNode [2023-03-31 23:52:28,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:52:28,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:52:28,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:52:28,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:52:28,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28" (1/1) ... [2023-03-31 23:52:28,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28" (1/1) ... [2023-03-31 23:52:28,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28" (1/1) ... [2023-03-31 23:52:28,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28" (1/1) ... [2023-03-31 23:52:28,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28" (1/1) ... [2023-03-31 23:52:28,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28" (1/1) ... [2023-03-31 23:52:28,653 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28" (1/1) ... [2023-03-31 23:52:28,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28" (1/1) ... [2023-03-31 23:52:28,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:52:28,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:52:28,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:52:28,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:52:28,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28" (1/1) ... [2023-03-31 23:52:28,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:52:28,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:52:28,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 23:52:28,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 23:52:28,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:52:28,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:52:28,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:52:28,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:52:28,739 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:52:28,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 23:52:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 23:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 23:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 23:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 23:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-03-31 23:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-03-31 23:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-03-31 23:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:52:28,742 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:52:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:52:28,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:52:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:52:28,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:52:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:52:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:52:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:52:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:52:28,744 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 23:52:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 23:52:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 23:52:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:52:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:52:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:52:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:52:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:52:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:52:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:52:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:52:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:52:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:52:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:52:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:52:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:52:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:52:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:52:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:52:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:52:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:52:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 23:52:28,748 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 23:52:28,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-03-31 23:52:28,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 23:52:28,749 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-03-31 23:52:28,749 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-03-31 23:52:28,750 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 23:52:28,750 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:52:28,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:52:28,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:52:28,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:52:28,932 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:52:28,934 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:52:29,378 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:52:29,482 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:52:29,482 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 23:52:29,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:52:29 BoogieIcfgContainer [2023-03-31 23:52:29,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:52:29,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:52:29,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:52:29,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:52:29,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:52:28" (1/3) ... [2023-03-31 23:52:29,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7f150e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:52:29, skipping insertion in model container [2023-03-31 23:52:29,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:52:28" (2/3) ... [2023-03-31 23:52:29,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7f150e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:52:29, skipping insertion in model container [2023-03-31 23:52:29,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:52:29" (3/3) ... [2023-03-31 23:52:29,489 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2023-03-31 23:52:29,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:52:29,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:52:29,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:52:29,537 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;@789ee343, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:52:29,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:52:29,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 57 states have (on average 1.263157894736842) internal successors, (72), 68 states have internal predecessors, (72), 41 states have call successors, (41), 25 states have call predecessors, (41), 25 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2023-03-31 23:52:29,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-03-31 23:52:29,547 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:52:29,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:52:29,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:52:29,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:52:29,553 INFO L85 PathProgramCache]: Analyzing trace with hash -700548726, now seen corresponding path program 1 times [2023-03-31 23:52:29,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:52:29,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132575829] [2023-03-31 23:52:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:52:29,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:52:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:52:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:52:29,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:52:29,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132575829] [2023-03-31 23:52:29,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132575829] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:52:29,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:52:29,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 23:52:29,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590296598] [2023-03-31 23:52:29,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:52:29,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 23:52:29,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:52:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 23:52:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:52:29,768 INFO L87 Difference]: Start difference. First operand has 127 states, 57 states have (on average 1.263157894736842) internal successors, (72), 68 states have internal predecessors, (72), 41 states have call successors, (41), 25 states have call predecessors, (41), 25 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 23:52:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:52:29,811 INFO L93 Difference]: Finished difference Result 183 states and 220 transitions. [2023-03-31 23:52:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 23:52:29,825 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-03-31 23:52:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:52:29,833 INFO L225 Difference]: With dead ends: 183 [2023-03-31 23:52:29,833 INFO L226 Difference]: Without dead ends: 92 [2023-03-31 23:52:29,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:52:29,842 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:52:29,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:52:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-03-31 23:52:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-03-31 23:52:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 55 states have internal predecessors, (57), 26 states have call successors, (26), 23 states have call predecessors, (26), 18 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2023-03-31 23:52:29,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2023-03-31 23:52:29,895 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 42 [2023-03-31 23:52:29,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:52:29,896 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2023-03-31 23:52:29,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 23:52:29,896 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2023-03-31 23:52:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-03-31 23:52:29,898 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:52:29,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:52:29,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:52:29,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:52:29,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:52:29,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1131061512, now seen corresponding path program 1 times [2023-03-31 23:52:29,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:52:29,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231605433] [2023-03-31 23:52:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:52:29,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:52:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:52:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:52:30,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:52:30,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231605433] [2023-03-31 23:52:30,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231605433] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:52:30,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:52:30,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:52:30,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014923499] [2023-03-31 23:52:30,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:52:30,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:52:30,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:52:30,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:52:30,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:52:30,029 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 23:52:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:52:30,081 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2023-03-31 23:52:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:52:30,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-03-31 23:52:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:52:30,085 INFO L225 Difference]: With dead ends: 137 [2023-03-31 23:52:30,086 INFO L226 Difference]: Without dead ends: 84 [2023-03-31 23:52:30,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:52:30,091 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 9 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:52:30,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 147 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:52:30,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-03-31 23:52:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-03-31 23:52:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 50 states have internal predecessors, (51), 23 states have call successors, (23), 22 states have call predecessors, (23), 18 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2023-03-31 23:52:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2023-03-31 23:52:30,098 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 43 [2023-03-31 23:52:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:52:30,099 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2023-03-31 23:52:30,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 23:52:30,099 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2023-03-31 23:52:30,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-03-31 23:52:30,100 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:52:30,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:52:30,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:52:30,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:52:30,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:52:30,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1893055488, now seen corresponding path program 1 times [2023-03-31 23:52:30,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:52:30,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131479472] [2023-03-31 23:52:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:52:30,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:52:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:52:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:52:30,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:52:30,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131479472] [2023-03-31 23:52:30,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131479472] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:52:30,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:52:30,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:52:30,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969069306] [2023-03-31 23:52:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:52:30,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:52:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:52:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:52:30,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:52:30,339 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 23:52:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:52:30,493 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2023-03-31 23:52:30,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:52:30,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2023-03-31 23:52:30,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:52:30,495 INFO L225 Difference]: With dead ends: 146 [2023-03-31 23:52:30,495 INFO L226 Difference]: Without dead ends: 84 [2023-03-31 23:52:30,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-03-31 23:52:30,501 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 82 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:52:30,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 220 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:52:30,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-03-31 23:52:30,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-03-31 23:52:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 49 states have internal predecessors, (50), 23 states have call successors, (23), 22 states have call predecessors, (23), 18 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2023-03-31 23:52:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2023-03-31 23:52:30,516 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 46 [2023-03-31 23:52:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:52:30,516 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2023-03-31 23:52:30,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 23:52:30,517 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2023-03-31 23:52:30,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 23:52:30,518 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:52:30,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:52:30,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:52:30,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:52:30,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:52:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1712224879, now seen corresponding path program 1 times [2023-03-31 23:52:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:52:30,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142760252] [2023-03-31 23:52:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:52:30,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:52:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:52:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:52:30,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:52:30,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142760252] [2023-03-31 23:52:30,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142760252] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:52:30,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:52:30,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 23:52:30,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387027102] [2023-03-31 23:52:30,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:52:30,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 23:52:30,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:52:30,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 23:52:30,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 23:52:30,681 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-03-31 23:52:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:52:30,915 INFO L93 Difference]: Finished difference Result 223 states and 260 transitions. [2023-03-31 23:52:30,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:52:30,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 54 [2023-03-31 23:52:30,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:52:30,917 INFO L225 Difference]: With dead ends: 223 [2023-03-31 23:52:30,917 INFO L226 Difference]: Without dead ends: 161 [2023-03-31 23:52:30,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:52:30,918 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 112 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:52:30,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 117 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:52:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-03-31 23:52:30,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 144. [2023-03-31 23:52:30,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 85 states have internal predecessors, (91), 34 states have call successors, (34), 34 states have call predecessors, (34), 32 states have return successors, (34), 31 states have call predecessors, (34), 30 states have call successors, (34) [2023-03-31 23:52:30,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2023-03-31 23:52:30,932 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 159 transitions. Word has length 54 [2023-03-31 23:52:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:52:30,932 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 159 transitions. [2023-03-31 23:52:30,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-03-31 23:52:30,932 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 159 transitions. [2023-03-31 23:52:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-03-31 23:52:30,933 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:52:30,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:52:30,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 23:52:30,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:52:30,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:52:30,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1636158275, now seen corresponding path program 1 times [2023-03-31 23:52:30,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:52:30,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548487397] [2023-03-31 23:52:30,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:52:30,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:52:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:52:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:52:31,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:52:31,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548487397] [2023-03-31 23:52:31,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548487397] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:52:31,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:52:31,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-03-31 23:52:31,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673288367] [2023-03-31 23:52:31,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:52:31,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 23:52:31,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:52:31,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 23:52:31,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-03-31 23:52:31,127 INFO L87 Difference]: Start difference. First operand 144 states and 159 transitions. Second operand has 12 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2023-03-31 23:52:31,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:52:31,418 INFO L93 Difference]: Finished difference Result 394 states and 448 transitions. [2023-03-31 23:52:31,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 23:52:31,418 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) Word has length 63 [2023-03-31 23:52:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:52:31,420 INFO L225 Difference]: With dead ends: 394 [2023-03-31 23:52:31,420 INFO L226 Difference]: Without dead ends: 272 [2023-03-31 23:52:31,421 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 [2023-03-31 23:52:31,421 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 189 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:52:31,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 603 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:52:31,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-03-31 23:52:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 193. [2023-03-31 23:52:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 106 states have (on average 1.179245283018868) internal successors, (125), 116 states have internal predecessors, (125), 44 states have call successors, (44), 44 states have call predecessors, (44), 42 states have return successors, (44), 41 states have call predecessors, (44), 40 states have call successors, (44) [2023-03-31 23:52:31,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2023-03-31 23:52:31,476 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 63 [2023-03-31 23:52:31,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:52:31,476 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 213 transitions. [2023-03-31 23:52:31,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (17), 3 states have call predecessors, (17), 6 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2023-03-31 23:52:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 213 transitions. [2023-03-31 23:52:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-03-31 23:52:31,477 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:52:31,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:52:31,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 23:52:31,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:52:31,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:52:31,478 INFO L85 PathProgramCache]: Analyzing trace with hash 466205732, now seen corresponding path program 1 times [2023-03-31 23:52:31,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:52:31,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041152862] [2023-03-31 23:52:31,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:52:31,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:52:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:52:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:52:31,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:52:31,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041152862] [2023-03-31 23:52:31,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041152862] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:52:31,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:52:31,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:52:31,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498756949] [2023-03-31 23:52:31,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:52:31,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:52:31,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:52:31,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:52:31,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:52:31,576 INFO L87 Difference]: Start difference. First operand 193 states and 213 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 23:52:31,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:52:31,784 INFO L93 Difference]: Finished difference Result 215 states and 242 transitions. [2023-03-31 23:52:31,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 23:52:31,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 63 [2023-03-31 23:52:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:52:31,786 INFO L225 Difference]: With dead ends: 215 [2023-03-31 23:52:31,786 INFO L226 Difference]: Without dead ends: 212 [2023-03-31 23:52:31,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-03-31 23:52:31,787 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 98 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:52:31,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 182 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:52:31,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-03-31 23:52:31,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 193. [2023-03-31 23:52:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 116 states have internal predecessors, (123), 44 states have call successors, (44), 44 states have call predecessors, (44), 42 states have return successors, (44), 41 states have call predecessors, (44), 40 states have call successors, (44) [2023-03-31 23:52:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 211 transitions. [2023-03-31 23:52:31,804 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 211 transitions. Word has length 63 [2023-03-31 23:52:31,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:52:31,804 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 211 transitions. [2023-03-31 23:52:31,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 23:52:31,804 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 211 transitions. [2023-03-31 23:52:31,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-03-31 23:52:31,805 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:52:31,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:52:31,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 23:52:31,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:52:31,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:52:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1031287604, now seen corresponding path program 1 times [2023-03-31 23:52:31,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:52:31,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851590735] [2023-03-31 23:52:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:52:31,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:52:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:52:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:52:31,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:52:31,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851590735] [2023-03-31 23:52:31,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851590735] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:52:31,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:52:31,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:52:31,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401156572] [2023-03-31 23:52:31,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:52:31,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:52:31,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:52:31,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:52:31,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:52:31,888 INFO L87 Difference]: Start difference. First operand 193 states and 211 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 23:52:31,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:52:31,994 INFO L93 Difference]: Finished difference Result 517 states and 583 transitions. [2023-03-31 23:52:31,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 23:52:31,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 66 [2023-03-31 23:52:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:52:31,997 INFO L225 Difference]: With dead ends: 517 [2023-03-31 23:52:31,997 INFO L226 Difference]: Without dead ends: 346 [2023-03-31 23:52:31,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:52:31,998 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 54 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:52:31,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 327 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:52:31,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-03-31 23:52:32,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 332. [2023-03-31 23:52:32,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 187 states have (on average 1.1497326203208555) internal successors, (215), 203 states have internal predecessors, (215), 72 states have call successors, (72), 72 states have call predecessors, (72), 72 states have return successors, (76), 70 states have call predecessors, (76), 68 states have call successors, (76) [2023-03-31 23:52:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 363 transitions. [2023-03-31 23:52:32,025 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 363 transitions. Word has length 66 [2023-03-31 23:52:32,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:52:32,026 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 363 transitions. [2023-03-31 23:52:32,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 23:52:32,026 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 363 transitions. [2023-03-31 23:52:32,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-03-31 23:52:32,027 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:52:32,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:52:32,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 23:52:32,027 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:52:32,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:52:32,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1668266259, now seen corresponding path program 1 times [2023-03-31 23:52:32,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:52:32,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027178053] [2023-03-31 23:52:32,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:52:32,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:52:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:52:32,038 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 23:52:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:52:32,062 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 23:52:32,062 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 23:52:32,063 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:52:32,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 23:52:32,066 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:52:32,068 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:52:32,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:52:32 BoogieIcfgContainer [2023-03-31 23:52:32,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:52:32,105 INFO L158 Benchmark]: Toolchain (without parser) took 3838.27ms. Allocated memory was 292.6MB in the beginning and 445.6MB in the end (delta: 153.1MB). Free memory was 254.3MB in the beginning and 241.2MB in the end (delta: 13.1MB). Peak memory consumption was 167.8MB. Max. memory is 8.0GB. [2023-03-31 23:52:32,105 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 196.1MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:52:32,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.05ms. Allocated memory is still 292.6MB. Free memory was 253.9MB in the beginning and 235.7MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-03-31 23:52:32,105 INFO L158 Benchmark]: Boogie Preprocessor took 50.53ms. Allocated memory is still 292.6MB. Free memory was 235.7MB in the beginning and 232.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-03-31 23:52:32,106 INFO L158 Benchmark]: RCFGBuilder took 825.36ms. Allocated memory is still 292.6MB. Free memory was 232.5MB in the beginning and 247.6MB in the end (delta: -15.1MB). Peak memory consumption was 53.4MB. Max. memory is 8.0GB. [2023-03-31 23:52:32,106 INFO L158 Benchmark]: TraceAbstraction took 2618.88ms. Allocated memory was 292.6MB in the beginning and 445.6MB in the end (delta: 153.1MB). Free memory was 246.6MB in the beginning and 241.2MB in the end (delta: 5.4MB). Peak memory consumption was 158.4MB. Max. memory is 8.0GB. [2023-03-31 23:52:32,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 196.1MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 340.05ms. Allocated memory is still 292.6MB. Free memory was 253.9MB in the beginning and 235.7MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.53ms. Allocated memory is still 292.6MB. Free memory was 235.7MB in the beginning and 232.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 825.36ms. Allocated memory is still 292.6MB. Free memory was 232.5MB in the beginning and 247.6MB in the end (delta: -15.1MB). Peak memory consumption was 53.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2618.88ms. Allocated memory was 292.6MB in the beginning and 445.6MB in the end (delta: 153.1MB). Free memory was 246.6MB in the beginning and 241.2MB in the end (delta: 5.4MB). Peak memory consumption was 158.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 524]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L323] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L534] int waterLevel = 1; [L535] int methaneLevelCritical = 0; [L699] int pumpRunning = 0; [L700] int systemActive = 1; [L131] int retValue_acc ; [L132] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L136] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L137] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L138] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L912] int retValue_acc ; [L915] retValue_acc = 1 [L916] return (retValue_acc); [L138] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L142] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L143] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L122] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L630] int splverifierCounter ; [L631] int tmp ; [L632] int tmp___0 ; [L633] int tmp___1 ; [L634] int tmp___2 ; [L637] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L639] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L641] COND TRUE splverifierCounter < 4 [L647] tmp = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L651] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L552] COND TRUE waterLevel < 2 [L553] waterLevel = waterLevel + 1 [L651] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L657] tmp___0 = __VERIFIER_nondet_int() [L659] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L661] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L564] COND FALSE !(\read(methaneLevelCritical)) [L567] methaneLevelCritical = 1 [L661] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L667] tmp___2 = __VERIFIER_nondet_int() [L669] COND FALSE !(\read(tmp___2)) [L675] tmp___1 = __VERIFIER_nondet_int() [L677] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=1, tmp___2=0, waterLevel=2] [L684] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L707] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L714] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L716] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L736] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L739] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L741] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L833] int retValue_acc ; [L834] int tmp ; [L835] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L839] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L614] int retValue_acc ; [L617] COND FALSE !(waterLevel < 2) [L621] retValue_acc = 0 [L622] return (retValue_acc); [L839] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L839] tmp = isHighWaterSensorDry() [L841] COND FALSE !(\read(tmp)) [L844] tmp___0 = 1 [L846] retValue_acc = tmp___0 [L847] return (retValue_acc); [L741] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L741] tmp = isHighWaterLevel() [L743] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L745] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L764] pumpRunning = 1 [L745] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L716] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L722] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L861] int tmp ; [L862] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L866] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L573] int retValue_acc ; [L576] retValue_acc = methaneLevelCritical [L577] return (retValue_acc); [L866] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L866] tmp = isMethaneLevelCritical() [L868] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L870] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L788] int retValue_acc ; [L791] retValue_acc = pumpRunning [L792] return (retValue_acc); [L870] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L870] tmp___0 = isPumpRunning() [L872] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L874] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L524] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 172 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 569 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 544 mSDsluCounter, 1696 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1148 mSDsCounter, 219 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1343 IncrementalHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 219 mSolverCounterUnsat, 548 mSDtfsCounter, 1343 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=7, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 129 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 446 NumberOfCodeBlocks, 446 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 370 ConstructedInterpolants, 0 QuantifiedInterpolants, 733 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-03-31 23:52:32,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...