/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 OctagonDomain -i ../sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:00:48,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:00:48,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:00:48,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:00:48,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:00:48,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:00:48,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:00:48,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:00:48,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:00:48,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:00:48,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:00:48,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:00:48,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:00:48,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:00:48,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:00:48,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:00:48,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:00:48,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:00:48,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:00:48,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:00:48,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:00:48,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:00:48,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:00:48,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:00:48,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:00:48,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:00:48,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:00:48,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:00:48,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:00:48,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:00:48,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:00:48,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:00:48,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:00:48,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:00:48,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:00:48,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:00:48,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:00:48,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:00:48,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:00:48,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:00:48,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:00:48,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 06:00:48,157 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:00:48,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:00:48,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:00:48,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:00:48,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:00:48,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:00:48,159 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:00:48,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:00:48,159 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:00:48,160 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:00:48,160 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:00:48,161 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:00:48,161 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:00:48,161 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:00:48,161 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:00:48,161 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:00:48,161 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:00:48,162 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:00:48,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:00:48,162 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:00:48,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:00:48,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:00:48,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:00:48,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:00:48,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:00:48,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:00:48,163 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:00:48,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:00:48,164 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:00:48,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:00:48,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:00:48,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:00:48,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:00:48,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:00:48,165 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:00:48,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:00:48,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:00:48,165 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:00:48,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:00:48,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:00:48,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:00:48,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:00:48,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:00:48,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:00:48,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:00:48,400 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:00:48,400 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:00:48,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c [2023-04-01 06:00:49,625 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:00:49,875 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:00:49,881 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c [2023-04-01 06:00:49,895 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2229a250d/f2dc45717dfa4453b12b8792627f0dec/FLAGedb0ec865 [2023-04-01 06:00:49,908 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2229a250d/f2dc45717dfa4453b12b8792627f0dec [2023-04-01 06:00:49,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:00:49,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:00:49,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:00:49,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:00:49,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:00:49,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:00:49" (1/1) ... [2023-04-01 06:00:49,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d51b71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:49, skipping insertion in model container [2023-04-01 06:00:49,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:00:49" (1/1) ... [2023-04-01 06:00:49,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:00:49,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:00:50,138 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_spec4_product55.cil.c[6887,6900] [2023-04-01 06:00:50,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:00:50,200 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:00:50,223 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_spec4_product55.cil.c[6887,6900] [2023-04-01 06:00:50,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:00:50,270 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:00:50,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:50 WrapperNode [2023-04-01 06:00:50,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:00:50,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:00:50,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:00:50,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:00:50,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:50" (1/1) ... [2023-04-01 06:00:50,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:50" (1/1) ... [2023-04-01 06:00:50,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:50" (1/1) ... [2023-04-01 06:00:50,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:50" (1/1) ... [2023-04-01 06:00:50,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:50" (1/1) ... [2023-04-01 06:00:50,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:50" (1/1) ... [2023-04-01 06:00:50,324 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:50" (1/1) ... [2023-04-01 06:00:50,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:50" (1/1) ... [2023-04-01 06:00:50,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:00:50,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:00:50,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:00:50,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:00:50,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:50" (1/1) ... [2023-04-01 06:00:50,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:00:50,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:00:50,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 06:00:50,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 06:00:50,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:00:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:00:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 06:00:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:00:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 06:00:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 06:00:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 06:00:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 06:00:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2023-04-01 06:00:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 06:00:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 06:00:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 06:00:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 06:00:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 06:00:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 06:00:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 06:00:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 06:00:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 06:00:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-04-01 06:00:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 06:00:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 06:00:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 06:00:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 06:00:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 06:00:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 06:00:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 06:00:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 06:00:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 06:00:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:00:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 06:00:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 06:00:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 06:00:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 06:00:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 06:00:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 06:00:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 06:00:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 06:00:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 06:00:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 06:00:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 06:00:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 06:00:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 06:00:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 06:00:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:00:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:00:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:00:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:00:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 06:00:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 06:00:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 06:00:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 06:00:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 06:00:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 06:00:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 06:00:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 06:00:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 06:00:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 06:00:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 06:00:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 06:00:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 06:00:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 06:00:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 06:00:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 06:00:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 06:00:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-04-01 06:00:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 06:00:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 06:00:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 06:00:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 06:00:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 06:00:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2023-04-01 06:00:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 06:00:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 06:00:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 06:00:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 06:00:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 06:00:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 06:00:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 06:00:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 06:00:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 06:00:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 06:00:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:00:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 06:00:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 06:00:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 06:00:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 06:00:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 06:00:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:00:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 06:00:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 06:00:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:00:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 06:00:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 06:00:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:00:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 06:00:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 06:00:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 06:00:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:00:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:00:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:00:50,616 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:00:50,619 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:00:51,244 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:00:51,407 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:00:51,407 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 06:00:51,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:00:51 BoogieIcfgContainer [2023-04-01 06:00:51,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:00:51,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:00:51,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:00:51,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:00:51,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:00:49" (1/3) ... [2023-04-01 06:00:51,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c2d4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:00:51, skipping insertion in model container [2023-04-01 06:00:51,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:00:50" (2/3) ... [2023-04-01 06:00:51,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c2d4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:00:51, skipping insertion in model container [2023-04-01 06:00:51,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:00:51" (3/3) ... [2023-04-01 06:00:51,424 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product55.cil.c [2023-04-01 06:00:51,445 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:00:51,446 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:00:51,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:00:51,522 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;@6843860b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:00:51,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:00:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 75 states have (on average 1.28) internal successors, (96), 91 states have internal predecessors, (96), 52 states have call successors, (52), 32 states have call predecessors, (52), 32 states have return successors, (52), 46 states have call predecessors, (52), 52 states have call successors, (52) [2023-04-01 06:00:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 06:00:51,541 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:00:51,542 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] [2023-04-01 06:00:51,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:00:51,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:00:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1597303305, now seen corresponding path program 1 times [2023-04-01 06:00:51,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:00:51,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541116078] [2023-04-01 06:00:51,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:00:51,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:00:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:00:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:00:51,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:00:51,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541116078] [2023-04-01 06:00:51,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541116078] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:00:51,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:00:51,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 06:00:51,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641096527] [2023-04-01 06:00:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:00:51,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 06:00:51,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:00:51,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 06:00:51,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 06:00:51,775 INFO L87 Difference]: Start difference. First operand has 162 states, 75 states have (on average 1.28) internal successors, (96), 91 states have internal predecessors, (96), 52 states have call successors, (52), 32 states have call predecessors, (52), 32 states have return successors, (52), 46 states have call predecessors, (52), 52 states have call successors, (52) 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) [2023-04-01 06:00:51,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:00:51,887 INFO L93 Difference]: Finished difference Result 257 states and 314 transitions. [2023-04-01 06:00:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 06:00:51,890 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 [2023-04-01 06:00:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:00:51,900 INFO L225 Difference]: With dead ends: 257 [2023-04-01 06:00:51,900 INFO L226 Difference]: Without dead ends: 129 [2023-04-01 06:00:51,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 06:00:51,908 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:00:51,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:00:51,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-01 06:00:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-04-01 06:00:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 79 states have internal predecessors, (82), 37 states have call successors, (37), 30 states have call predecessors, (37), 25 states have return successors, (32), 26 states have call predecessors, (32), 32 states have call successors, (32) [2023-04-01 06:00:51,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2023-04-01 06:00:51,955 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 42 [2023-04-01 06:00:51,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:00:51,956 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2023-04-01 06:00:51,956 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) [2023-04-01 06:00:51,956 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2023-04-01 06:00:51,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 06:00:51,959 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:00:51,959 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] [2023-04-01 06:00:51,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:00:51,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:00:51,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:00:51,960 INFO L85 PathProgramCache]: Analyzing trace with hash 278877031, now seen corresponding path program 1 times [2023-04-01 06:00:51,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:00:51,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642405725] [2023-04-01 06:00:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:00:51,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:00:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:00:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:00:52,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:00:52,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642405725] [2023-04-01 06:00:52,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642405725] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:00:52,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:00:52,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:00:52,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63473726] [2023-04-01 06:00:52,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:00:52,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:00:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:00:52,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:00:52,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:00:52,107 INFO L87 Difference]: Start difference. First operand 129 states and 151 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) [2023-04-01 06:00:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:00:52,175 INFO L93 Difference]: Finished difference Result 208 states and 242 transitions. [2023-04-01 06:00:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:00:52,175 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 [2023-04-01 06:00:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:00:52,177 INFO L225 Difference]: With dead ends: 208 [2023-04-01 06:00:52,177 INFO L226 Difference]: Without dead ends: 121 [2023-04-01 06:00:52,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:00:52,179 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 11 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:00:52,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 230 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:00:52,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-04-01 06:00:52,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-04-01 06:00:52,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 74 states have internal predecessors, (76), 34 states have call successors, (34), 29 states have call predecessors, (34), 25 states have return successors, (30), 24 states have call predecessors, (30), 30 states have call successors, (30) [2023-04-01 06:00:52,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 140 transitions. [2023-04-01 06:00:52,194 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 140 transitions. Word has length 43 [2023-04-01 06:00:52,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:00:52,194 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 140 transitions. [2023-04-01 06:00:52,194 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) [2023-04-01 06:00:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 140 transitions. [2023-04-01 06:00:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-01 06:00:52,196 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:00:52,196 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] [2023-04-01 06:00:52,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:00:52,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:00:52,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:00:52,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1508197131, now seen corresponding path program 1 times [2023-04-01 06:00:52,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:00:52,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814852161] [2023-04-01 06:00:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:00:52,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:00:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:00:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:00:52,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:00:52,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814852161] [2023-04-01 06:00:52,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814852161] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:00:52,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:00:52,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:00:52,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942221966] [2023-04-01 06:00:52,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:00:52,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:00:52,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:00:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:00:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:00:52,440 INFO L87 Difference]: Start difference. First operand 121 states and 140 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) [2023-04-01 06:00:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:00:52,824 INFO L93 Difference]: Finished difference Result 363 states and 433 transitions. [2023-04-01 06:00:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 06:00:52,825 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 [2023-04-01 06:00:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:00:52,836 INFO L225 Difference]: With dead ends: 363 [2023-04-01 06:00:52,837 INFO L226 Difference]: Without dead ends: 264 [2023-04-01 06:00:52,840 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 [2023-04-01 06:00:52,841 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 233 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:00:52,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 564 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:00:52,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-04-01 06:00:52,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 256. [2023-04-01 06:00:52,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 135 states have (on average 1.2740740740740741) internal successors, (172), 161 states have internal predecessors, (172), 68 states have call successors, (68), 58 states have call predecessors, (68), 52 states have return successors, (65), 48 states have call predecessors, (65), 64 states have call successors, (65) [2023-04-01 06:00:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 305 transitions. [2023-04-01 06:00:52,902 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 305 transitions. Word has length 46 [2023-04-01 06:00:52,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:00:52,905 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 305 transitions. [2023-04-01 06:00:52,905 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) [2023-04-01 06:00:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 305 transitions. [2023-04-01 06:00:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 06:00:52,911 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:00:52,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:00:52,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:00:52,911 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:00:52,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:00:52,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1752845607, now seen corresponding path program 1 times [2023-04-01 06:00:52,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:00:52,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302554682] [2023-04-01 06:00:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:00:52,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:00:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:00:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:00:53,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:00:53,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302554682] [2023-04-01 06:00:53,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302554682] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:00:53,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:00:53,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 06:00:53,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226701776] [2023-04-01 06:00:53,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:00:53,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 06:00:53,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:00:53,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 06:00:53,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 06:00:53,098 INFO L87 Difference]: Start difference. First operand 256 states and 305 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 06:00:53,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:00:53,293 INFO L93 Difference]: Finished difference Result 706 states and 868 transitions. [2023-04-01 06:00:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 06:00:53,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2023-04-01 06:00:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:00:53,298 INFO L225 Difference]: With dead ends: 706 [2023-04-01 06:00:53,298 INFO L226 Difference]: Without dead ends: 472 [2023-04-01 06:00:53,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:00:53,309 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 100 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:00:53,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 527 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:00:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2023-04-01 06:00:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 454. [2023-04-01 06:00:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 245 states have (on average 1.2775510204081633) internal successors, (313), 290 states have internal predecessors, (313), 118 states have call successors, (118), 98 states have call predecessors, (118), 90 states have return successors, (120), 82 states have call predecessors, (120), 114 states have call successors, (120) [2023-04-01 06:00:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 551 transitions. [2023-04-01 06:00:53,379 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 551 transitions. Word has length 51 [2023-04-01 06:00:53,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:00:53,381 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 551 transitions. [2023-04-01 06:00:53,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 06:00:53,381 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 551 transitions. [2023-04-01 06:00:53,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-01 06:00:53,388 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:00:53,388 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] [2023-04-01 06:00:53,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:00:53,388 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:00:53,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:00:53,389 INFO L85 PathProgramCache]: Analyzing trace with hash -520311511, now seen corresponding path program 1 times [2023-04-01 06:00:53,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:00:53,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222480007] [2023-04-01 06:00:53,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:00:53,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:00:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:00:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:00:53,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:00:53,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222480007] [2023-04-01 06:00:53,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222480007] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:00:53,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:00:53,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 06:00:53,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022705178] [2023-04-01 06:00:53,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:00:53,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 06:00:53,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:00:53,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 06:00:53,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 06:00:53,489 INFO L87 Difference]: Start difference. First operand 454 states and 551 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-01 06:00:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:00:53,675 INFO L93 Difference]: Finished difference Result 1005 states and 1278 transitions. [2023-04-01 06:00:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 06:00:53,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2023-04-01 06:00:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:00:53,682 INFO L225 Difference]: With dead ends: 1005 [2023-04-01 06:00:53,683 INFO L226 Difference]: Without dead ends: 573 [2023-04-01 06:00:53,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:00:53,689 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 90 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:00:53,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 499 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:00:53,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-04-01 06:00:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 550. [2023-04-01 06:00:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 320 states have (on average 1.21875) internal successors, (390), 347 states have internal predecessors, (390), 117 states have call successors, (117), 113 states have call predecessors, (117), 112 states have return successors, (147), 109 states have call predecessors, (147), 113 states have call successors, (147) [2023-04-01 06:00:53,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 654 transitions. [2023-04-01 06:00:53,748 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 654 transitions. Word has length 54 [2023-04-01 06:00:53,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:00:53,748 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 654 transitions. [2023-04-01 06:00:53,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-01 06:00:53,749 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 654 transitions. [2023-04-01 06:00:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-01 06:00:53,752 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:00:53,753 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, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:00:53,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:00:53,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:00:53,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:00:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash 19898327, now seen corresponding path program 1 times [2023-04-01 06:00:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:00:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425533283] [2023-04-01 06:00:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:00:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:00:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:00:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:00:54,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:00:54,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425533283] [2023-04-01 06:00:54,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425533283] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:00:54,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:00:54,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-01 06:00:54,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077375495] [2023-04-01 06:00:54,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:00:54,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 06:00:54,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:00:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 06:00:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-04-01 06:00:54,128 INFO L87 Difference]: Start difference. First operand 550 states and 654 transitions. Second operand has 14 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (14), 7 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-01 06:00:54,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:00:54,464 INFO L93 Difference]: Finished difference Result 1101 states and 1356 transitions. [2023-04-01 06:00:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 06:00:54,464 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (14), 7 states have call predecessors, (14), 3 states have call successors, (14) Word has length 76 [2023-04-01 06:00:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:00:54,469 INFO L225 Difference]: With dead ends: 1101 [2023-04-01 06:00:54,469 INFO L226 Difference]: Without dead ends: 777 [2023-04-01 06:00:54,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-04-01 06:00:54,471 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 272 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:00:54,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1268 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:00:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-04-01 06:00:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 748. [2023-04-01 06:00:54,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 443 states have (on average 1.216704288939052) internal successors, (539), 475 states have internal predecessors, (539), 152 states have call successors, (152), 148 states have call predecessors, (152), 152 states have return successors, (208), 151 states have call predecessors, (208), 148 states have call successors, (208) [2023-04-01 06:00:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 899 transitions. [2023-04-01 06:00:54,517 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 899 transitions. Word has length 76 [2023-04-01 06:00:54,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:00:54,518 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 899 transitions. [2023-04-01 06:00:54,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (14), 7 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-01 06:00:54,518 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 899 transitions. [2023-04-01 06:00:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-01 06:00:54,521 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:00:54,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:00:54,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:00:54,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:00:54,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:00:54,522 INFO L85 PathProgramCache]: Analyzing trace with hash 148771575, now seen corresponding path program 1 times [2023-04-01 06:00:54,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:00:54,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160788665] [2023-04-01 06:00:54,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:00:54,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:00:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:00:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 06:00:55,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:00:55,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160788665] [2023-04-01 06:00:55,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160788665] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:00:55,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947999053] [2023-04-01 06:00:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:00:55,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:00:55,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:00:55,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:00:55,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 06:00:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:00:55,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 33 conjunts are in the unsatisfiable core [2023-04-01 06:00:55,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:00:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:00:55,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 06:00:55,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947999053] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:00:55,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 06:00:55,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 22 [2023-04-01 06:00:55,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838063918] [2023-04-01 06:00:55,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:00:55,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 06:00:55,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:00:55,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 06:00:55,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:00:55,657 INFO L87 Difference]: Start difference. First operand 748 states and 899 transitions. Second operand has 14 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 6 states have call successors, (31), 5 states have call predecessors, (31), 7 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2023-04-01 06:00:57,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:00:57,071 INFO L93 Difference]: Finished difference Result 1599 states and 1973 transitions. [2023-04-01 06:00:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 06:00:57,072 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 6 states have call successors, (31), 5 states have call predecessors, (31), 7 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) Word has length 133 [2023-04-01 06:00:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:00:57,078 INFO L225 Difference]: With dead ends: 1599 [2023-04-01 06:00:57,078 INFO L226 Difference]: Without dead ends: 873 [2023-04-01 06:00:57,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=1420, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 06:00:57,082 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 248 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:00:57,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 390 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 06:00:57,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2023-04-01 06:00:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 813. [2023-04-01 06:00:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 488 states have (on average 1.209016393442623) internal successors, (590), 523 states have internal predecessors, (590), 169 states have call successors, (169), 165 states have call predecessors, (169), 155 states have return successors, (207), 156 states have call predecessors, (207), 165 states have call successors, (207) [2023-04-01 06:00:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 966 transitions. [2023-04-01 06:00:57,175 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 966 transitions. Word has length 133 [2023-04-01 06:00:57,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:00:57,175 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 966 transitions. [2023-04-01 06:00:57,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 6 states have call successors, (31), 5 states have call predecessors, (31), 7 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2023-04-01 06:00:57,175 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 966 transitions. [2023-04-01 06:00:57,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 06:00:57,179 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:00:57,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:00:57,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 06:00:57,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:00:57,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:00:57,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:00:57,388 INFO L85 PathProgramCache]: Analyzing trace with hash -713021831, now seen corresponding path program 1 times [2023-04-01 06:00:57,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:00:57,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327571767] [2023-04-01 06:00:57,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:00:57,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:00:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:00:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 06:00:57,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:00:57,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327571767] [2023-04-01 06:00:57,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327571767] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:00:57,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969461420] [2023-04-01 06:00:57,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:00:57,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:00:57,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:00:57,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:00:57,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 06:00:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:00:57,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 06:00:57,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:00:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 06:00:58,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:00:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 06:00:59,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969461420] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:00:59,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1249400702] [2023-04-01 06:00:59,189 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2023-04-01 06:00:59,189 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:00:59,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:00:59,199 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:00:59,199 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:00:59,366 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 06:00:59,447 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-01 06:00:59,644 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-01 06:00:59,657 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-01 06:01:02,423 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 33 for LOIs [2023-04-01 06:01:02,430 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2023-04-01 06:01:02,640 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 26 for LOIs [2023-04-01 06:01:02,644 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 29 for LOIs [2023-04-01 06:01:02,769 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 27 for LOIs [2023-04-01 06:01:02,903 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2023-04-01 06:01:03,035 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 22 for LOIs [2023-04-01 06:01:03,104 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 22 for LOIs [2023-04-01 06:01:03,109 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 34 for LOIs [2023-04-01 06:01:03,114 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2023-04-01 06:01:03,116 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 23 for LOIs [2023-04-01 06:01:03,168 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 23 for LOIs [2023-04-01 06:01:03,171 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 23 for LOIs [2023-04-01 06:01:03,213 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 23 for LOIs [2023-04-01 06:01:03,215 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-01 06:01:03,217 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-01 06:01:03,222 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 20 for LOIs [2023-04-01 06:01:03,264 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 22 for LOIs [2023-04-01 06:01:03,266 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 30 for LOIs [2023-04-01 06:01:03,268 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 20 for LOIs [2023-04-01 06:01:03,270 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-01 06:01:03,272 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-01 06:01:03,274 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:01:07,177 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13606#(and (<= 1 |#StackHeapBarrier|) (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= ~head~0.base 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= ~waterLevel~0 0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 06:01:07,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:01:07,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:01:07,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 17] total 33 [2023-04-01 06:01:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105612744] [2023-04-01 06:01:07,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:01:07,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-01 06:01:07,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:01:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-01 06:01:07,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=7011, Unknown=0, NotChecked=0, Total=7656 [2023-04-01 06:01:07,182 INFO L87 Difference]: Start difference. First operand 813 states and 966 transitions. Second operand has 33 states, 22 states have (on average 6.454545454545454) internal successors, (142), 27 states have internal predecessors, (142), 10 states have call successors, (63), 11 states have call predecessors, (63), 18 states have return successors, (57), 16 states have call predecessors, (57), 10 states have call successors, (57) [2023-04-01 06:01:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:01:10,521 INFO L93 Difference]: Finished difference Result 4422 states and 6032 transitions. [2023-04-01 06:01:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-01 06:01:10,522 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 22 states have (on average 6.454545454545454) internal successors, (142), 27 states have internal predecessors, (142), 10 states have call successors, (63), 11 states have call predecessors, (63), 18 states have return successors, (57), 16 states have call predecessors, (57), 10 states have call successors, (57) Word has length 136 [2023-04-01 06:01:10,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:01:10,547 INFO L225 Difference]: With dead ends: 4422 [2023-04-01 06:01:10,547 INFO L226 Difference]: Without dead ends: 3738 [2023-04-01 06:01:10,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 328 SyntacticMatches, 18 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7137 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1319, Invalid=14181, Unknown=0, NotChecked=0, Total=15500 [2023-04-01 06:01:10,556 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 1497 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 2941 mSolverCounterSat, 1196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 4137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 2941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:01:10,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1041 Invalid, 4137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1196 Valid, 2941 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-01 06:01:10,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2023-04-01 06:01:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 2996. [2023-04-01 06:01:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 1789 states have (on average 1.198993851313583) internal successors, (2145), 1910 states have internal predecessors, (2145), 634 states have call successors, (634), 598 states have call predecessors, (634), 572 states have return successors, (916), 590 states have call predecessors, (916), 630 states have call successors, (916) [2023-04-01 06:01:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 3695 transitions. [2023-04-01 06:01:10,869 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 3695 transitions. Word has length 136 [2023-04-01 06:01:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:01:10,869 INFO L495 AbstractCegarLoop]: Abstraction has 2996 states and 3695 transitions. [2023-04-01 06:01:10,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 22 states have (on average 6.454545454545454) internal successors, (142), 27 states have internal predecessors, (142), 10 states have call successors, (63), 11 states have call predecessors, (63), 18 states have return successors, (57), 16 states have call predecessors, (57), 10 states have call successors, (57) [2023-04-01 06:01:10,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 3695 transitions. [2023-04-01 06:01:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-04-01 06:01:10,875 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:01:10,876 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:01:10,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 06:01:11,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-04-01 06:01:11,083 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:01:11,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:01:11,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1648573979, now seen corresponding path program 2 times [2023-04-01 06:01:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:01:11,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7227313] [2023-04-01 06:01:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:01:11,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:01:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:01:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 37 proven. 20 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-04-01 06:01:11,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:01:11,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7227313] [2023-04-01 06:01:11,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7227313] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:01:11,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177341879] [2023-04-01 06:01:11,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 06:01:11,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:01:11,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:01:11,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:01:11,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 06:01:11,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-01 06:01:11,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 06:01:11,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 43 conjunts are in the unsatisfiable core [2023-04-01 06:01:11,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:01:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-01 06:01:12,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 06:01:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177341879] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:01:12,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 06:01:12,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2023-04-01 06:01:12,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381054087] [2023-04-01 06:01:12,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:01:12,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:01:12,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:01:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:01:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2023-04-01 06:01:12,419 INFO L87 Difference]: Start difference. First operand 2996 states and 3695 transitions. Second operand has 12 states, 9 states have (on average 11.666666666666666) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (42), 4 states have call predecessors, (42), 6 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) [2023-04-01 06:01:13,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:01:13,450 INFO L93 Difference]: Finished difference Result 6145 states and 7574 transitions. [2023-04-01 06:01:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 06:01:13,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 11.666666666666666) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (42), 4 states have call predecessors, (42), 6 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) Word has length 196 [2023-04-01 06:01:13,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:01:13,469 INFO L225 Difference]: With dead ends: 6145 [2023-04-01 06:01:13,469 INFO L226 Difference]: Without dead ends: 3157 [2023-04-01 06:01:13,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2023-04-01 06:01:13,481 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 115 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:01:13,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1202 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:01:13,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2023-04-01 06:01:13,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3049. [2023-04-01 06:01:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3049 states, 1819 states have (on average 1.1902144035184168) internal successors, (2165), 1938 states have internal predecessors, (2165), 643 states have call successors, (643), 607 states have call predecessors, (643), 586 states have return successors, (899), 604 states have call predecessors, (899), 639 states have call successors, (899) [2023-04-01 06:01:13,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 3707 transitions. [2023-04-01 06:01:13,692 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 3707 transitions. Word has length 196 [2023-04-01 06:01:13,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:01:13,693 INFO L495 AbstractCegarLoop]: Abstraction has 3049 states and 3707 transitions. [2023-04-01 06:01:13,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 11.666666666666666) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (42), 4 states have call predecessors, (42), 6 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) [2023-04-01 06:01:13,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 3707 transitions. [2023-04-01 06:01:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-04-01 06:01:13,699 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:01:13,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:01:13,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 06:01:13,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:01:13,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:01:13,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:01:13,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1559240874, now seen corresponding path program 3 times [2023-04-01 06:01:13,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:01:13,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77939395] [2023-04-01 06:01:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:01:13,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:01:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:01:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 49 proven. 28 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-04-01 06:01:14,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:01:14,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77939395] [2023-04-01 06:01:14,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77939395] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:01:14,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206206966] [2023-04-01 06:01:14,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 06:01:14,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:01:14,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:01:14,095 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:01:14,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 06:01:14,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 06:01:14,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 06:01:14,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 06:01:14,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:01:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 89 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 06:01:14,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:01:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 49 proven. 28 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-04-01 06:01:14,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206206966] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:01:14,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [386468199] [2023-04-01 06:01:14,800 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2023-04-01 06:01:14,800 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:01:14,800 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:01:14,800 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:01:14,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:01:14,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 06:01:14,913 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-01 06:01:15,011 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-01 06:01:15,025 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-01 06:01:16,997 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 33 for LOIs [2023-04-01 06:01:17,002 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2023-04-01 06:01:17,152 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 26 for LOIs [2023-04-01 06:01:17,155 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 29 for LOIs [2023-04-01 06:01:17,276 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 27 for LOIs [2023-04-01 06:01:17,362 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2023-04-01 06:01:17,480 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 22 for LOIs [2023-04-01 06:01:17,532 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 22 for LOIs [2023-04-01 06:01:17,536 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 34 for LOIs [2023-04-01 06:01:17,538 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2023-04-01 06:01:17,542 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 23 for LOIs [2023-04-01 06:01:17,580 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 23 for LOIs [2023-04-01 06:01:17,584 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 23 for LOIs [2023-04-01 06:01:17,636 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 23 for LOIs [2023-04-01 06:01:17,639 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-01 06:01:17,640 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-01 06:01:17,657 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 20 for LOIs [2023-04-01 06:01:17,700 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 22 for LOIs [2023-04-01 06:01:17,703 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 30 for LOIs [2023-04-01 06:01:17,706 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 20 for LOIs [2023-04-01 06:01:17,708 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-01 06:01:17,710 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-01 06:01:17,712 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:01:20,887 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39246#(and (<= 1 |#StackHeapBarrier|) (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= ~head~0.base 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= ~waterLevel~0 0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 06:01:20,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:01:20,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:01:20,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 06:01:20,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139239115] [2023-04-01 06:01:20,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:01:20,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 06:01:20,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:01:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 06:01:20,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=4141, Unknown=0, NotChecked=0, Total=4556 [2023-04-01 06:01:20,891 INFO L87 Difference]: Start difference. First operand 3049 states and 3707 transitions. Second operand has 13 states, 12 states have (on average 12.916666666666666) internal successors, (155), 12 states have internal predecessors, (155), 10 states have call successors, (65), 6 states have call predecessors, (65), 7 states have return successors, (65), 11 states have call predecessors, (65), 10 states have call successors, (65) [2023-04-01 06:01:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:01:21,622 INFO L93 Difference]: Finished difference Result 5916 states and 7289 transitions. [2023-04-01 06:01:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 06:01:21,622 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.916666666666666) internal successors, (155), 12 states have internal predecessors, (155), 10 states have call successors, (65), 6 states have call predecessors, (65), 7 states have return successors, (65), 11 states have call predecessors, (65), 10 states have call successors, (65) Word has length 196 [2023-04-01 06:01:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:01:21,637 INFO L225 Difference]: With dead ends: 5916 [2023-04-01 06:01:21,638 INFO L226 Difference]: Without dead ends: 3022 [2023-04-01 06:01:21,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 508 SyntacticMatches, 30 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3095 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=466, Invalid=4936, Unknown=0, NotChecked=0, Total=5402 [2023-04-01 06:01:21,648 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 351 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:01:21,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 554 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:01:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2023-04-01 06:01:21,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 2863. [2023-04-01 06:01:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 1720 states have (on average 1.1703488372093023) internal successors, (2013), 1836 states have internal predecessors, (2013), 585 states have call successors, (585), 568 states have call predecessors, (585), 557 states have return successors, (703), 549 states have call predecessors, (703), 581 states have call successors, (703) [2023-04-01 06:01:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 3301 transitions. [2023-04-01 06:01:21,865 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 3301 transitions. Word has length 196 [2023-04-01 06:01:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:01:21,866 INFO L495 AbstractCegarLoop]: Abstraction has 2863 states and 3301 transitions. [2023-04-01 06:01:21,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.916666666666666) internal successors, (155), 12 states have internal predecessors, (155), 10 states have call successors, (65), 6 states have call predecessors, (65), 7 states have return successors, (65), 11 states have call predecessors, (65), 10 states have call successors, (65) [2023-04-01 06:01:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 3301 transitions. [2023-04-01 06:01:21,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-04-01 06:01:21,870 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:01:21,871 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:01:21,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 06:01:22,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:01:22,081 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:01:22,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:01:22,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1883995835, now seen corresponding path program 1 times [2023-04-01 06:01:22,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:01:22,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413420805] [2023-04-01 06:01:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:01:22,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:01:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:01:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-04-01 06:01:22,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:01:22,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413420805] [2023-04-01 06:01:22,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413420805] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:01:22,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724158485] [2023-04-01 06:01:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:01:22,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:01:22,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:01:22,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:01:22,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 06:01:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:01:22,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 06:01:22,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:01:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 06:01:22,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 06:01:22,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724158485] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:01:22,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 06:01:22,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-04-01 06:01:22,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274919450] [2023-04-01 06:01:22,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:01:22,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:01:22,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:01:22,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:01:22,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 06:01:22,296 INFO L87 Difference]: Start difference. First operand 2863 states and 3301 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-04-01 06:01:22,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:01:22,423 INFO L93 Difference]: Finished difference Result 3537 states and 4129 transitions. [2023-04-01 06:01:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:01:22,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 201 [2023-04-01 06:01:22,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:01:22,429 INFO L225 Difference]: With dead ends: 3537 [2023-04-01 06:01:22,430 INFO L226 Difference]: Without dead ends: 1064 [2023-04-01 06:01:22,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 06:01:22,437 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 38 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:01:22,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 267 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:01:22,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2023-04-01 06:01:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1045. [2023-04-01 06:01:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 614 states have (on average 1.1091205211726385) internal successors, (681), 644 states have internal predecessors, (681), 218 states have call successors, (218), 210 states have call predecessors, (218), 212 states have return successors, (253), 212 states have call predecessors, (253), 214 states have call successors, (253) [2023-04-01 06:01:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1152 transitions. [2023-04-01 06:01:22,535 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1152 transitions. Word has length 201 [2023-04-01 06:01:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:01:22,535 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1152 transitions. [2023-04-01 06:01:22,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-04-01 06:01:22,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1152 transitions. [2023-04-01 06:01:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-04-01 06:01:22,539 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:01:22,539 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:01:22,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 06:01:22,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 06:01:22,747 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:01:22,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:01:22,748 INFO L85 PathProgramCache]: Analyzing trace with hash 949033932, now seen corresponding path program 1 times [2023-04-01 06:01:22,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:01:22,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212189124] [2023-04-01 06:01:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:01:22,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:01:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:01:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 62 proven. 12 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-04-01 06:01:22,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:01:22,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212189124] [2023-04-01 06:01:22,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212189124] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:01:22,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055112148] [2023-04-01 06:01:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:01:22,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:01:22,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:01:22,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 06:01:22,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 06:01:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:01:23,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 56 conjunts are in the unsatisfiable core [2023-04-01 06:01:23,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:01:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 140 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-01 06:01:23,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:01:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-04-01 06:01:25,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055112148] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:01:25,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [572495790] [2023-04-01 06:01:25,204 INFO L159 IcfgInterpreter]: Started Sifa with 110 locations of interest [2023-04-01 06:01:25,204 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:01:25,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:01:25,205 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:01:25,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:01:25,293 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 06:01:25,322 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-01 06:01:25,458 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-01 06:01:25,471 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-01 06:01:27,090 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 33 for LOIs [2023-04-01 06:01:27,094 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2023-04-01 06:01:27,225 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 26 for LOIs [2023-04-01 06:01:27,228 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 29 for LOIs [2023-04-01 06:01:27,327 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 27 for LOIs [2023-04-01 06:01:27,441 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2023-04-01 06:01:27,557 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 22 for LOIs [2023-04-01 06:01:27,602 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 22 for LOIs [2023-04-01 06:01:27,605 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 34 for LOIs [2023-04-01 06:01:27,611 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2023-04-01 06:01:27,613 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 23 for LOIs [2023-04-01 06:01:27,646 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 23 for LOIs [2023-04-01 06:01:27,648 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 23 for LOIs [2023-04-01 06:01:27,690 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 23 for LOIs [2023-04-01 06:01:27,693 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-01 06:01:27,694 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-01 06:01:27,696 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 20 for LOIs [2023-04-01 06:01:27,724 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 22 for LOIs [2023-04-01 06:01:27,726 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 30 for LOIs [2023-04-01 06:01:27,727 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 20 for LOIs [2023-04-01 06:01:27,728 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-01 06:01:27,730 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-01 06:01:27,731 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:01:32,752 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '60325#(and (<= 1 |#StackHeapBarrier|) (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= ~head~0.base 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= ~waterLevel~0 0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 06:01:32,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:01:32,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:01:32,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 22, 14] total 40 [2023-04-01 06:01:32,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443394572] [2023-04-01 06:01:32,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:01:32,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-04-01 06:01:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:01:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-04-01 06:01:32,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=8383, Unknown=0, NotChecked=0, Total=8930 [2023-04-01 06:01:32,758 INFO L87 Difference]: Start difference. First operand 1045 states and 1152 transitions. Second operand has 40 states, 28 states have (on average 6.5) internal successors, (182), 29 states have internal predecessors, (182), 10 states have call successors, (71), 9 states have call predecessors, (71), 21 states have return successors, (77), 19 states have call predecessors, (77), 10 states have call successors, (77) [2023-04-01 06:01:36,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:01:36,528 INFO L93 Difference]: Finished difference Result 1636 states and 1815 transitions. [2023-04-01 06:01:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-04-01 06:01:36,529 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 28 states have (on average 6.5) internal successors, (182), 29 states have internal predecessors, (182), 10 states have call successors, (71), 9 states have call predecessors, (71), 21 states have return successors, (77), 19 states have call predecessors, (77), 10 states have call successors, (77) Word has length 225 [2023-04-01 06:01:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:01:36,530 INFO L225 Difference]: With dead ends: 1636 [2023-04-01 06:01:36,530 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 06:01:36,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 573 SyntacticMatches, 30 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8470 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1377, Invalid=20973, Unknown=0, NotChecked=0, Total=22350 [2023-04-01 06:01:36,541 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 526 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 6176 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 6612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 6176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:01:36,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 1780 Invalid, 6612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 6176 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 06:01:36,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 06:01:36,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 06:01:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 06:01:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 06:01:36,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 225 [2023-04-01 06:01:36,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:01:36,542 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 06:01:36,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 28 states have (on average 6.5) internal successors, (182), 29 states have internal predecessors, (182), 10 states have call successors, (71), 9 states have call predecessors, (71), 21 states have return successors, (77), 19 states have call predecessors, (77), 10 states have call successors, (77) [2023-04-01 06:01:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 06:01:36,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 06:01:36,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 06:01:36,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 06:01:36,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:01:36,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.