/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_spec5_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:03:37,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:03:37,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:03:38,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:03:38,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:03:38,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:03:38,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:03:38,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:03:38,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:03:38,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:03:38,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:03:38,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:03:38,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:03:38,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:03:38,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:03:38,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:03:38,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:03:38,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:03:38,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:03:38,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:03:38,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:03:38,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:03:38,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:03:38,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:03:38,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:03:38,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:03:38,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:03:38,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:03:38,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:03:38,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:03:38,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:03:38,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:03:38,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:03:38,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:03:38,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:03:38,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:03:38,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:03:38,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:03:38,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:03:38,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:03:38,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:03:38,050 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 06:03:38,072 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:03:38,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:03:38,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:03:38,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:03:38,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:03:38,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:03:38,074 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:03:38,074 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:03:38,074 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:03:38,074 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:03:38,075 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:03:38,075 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:03:38,075 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:03:38,075 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:03:38,075 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:03:38,075 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:03:38,075 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:03:38,075 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:03:38,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:03:38,076 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:03:38,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:03:38,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:03:38,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:03:38,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:03:38,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:03:38,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:03:38,077 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:03:38,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:03:38,077 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:03:38,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:03:38,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:03:38,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:03:38,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:03:38,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:03:38,077 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:03:38,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:03:38,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:03:38,078 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:03:38,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:03:38,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:03:38,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:03:38,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:03:38,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:03:38,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:03:38,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:03:38,253 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:03:38,253 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:03:38,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c [2023-04-01 06:03:39,410 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:03:39,609 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:03:39,609 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c [2023-04-01 06:03:39,617 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e994f8d63/489142ea5885427fa71b20ddddeeb249/FLAG42ed18fbb [2023-04-01 06:03:39,626 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e994f8d63/489142ea5885427fa71b20ddddeeb249 [2023-04-01 06:03:39,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:03:39,629 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:03:39,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:03:39,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:03:39,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:03:39,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:03:39" (1/1) ... [2023-04-01 06:03:39,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d52c4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39, skipping insertion in model container [2023-04-01 06:03:39,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:03:39" (1/1) ... [2023-04-01 06:03:39,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:03:39,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:03:39,840 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c[19180,19193] [2023-04-01 06:03:39,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:03:39,852 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:03:39,920 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product62.cil.c[19180,19193] [2023-04-01 06:03:39,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:03:39,943 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:03:39,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39 WrapperNode [2023-04-01 06:03:39,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:03:39,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:03:39,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:03:39,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:03:39,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39" (1/1) ... [2023-04-01 06:03:39,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39" (1/1) ... [2023-04-01 06:03:39,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39" (1/1) ... [2023-04-01 06:03:39,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39" (1/1) ... [2023-04-01 06:03:39,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39" (1/1) ... [2023-04-01 06:03:39,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39" (1/1) ... [2023-04-01 06:03:39,992 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39" (1/1) ... [2023-04-01 06:03:39,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39" (1/1) ... [2023-04-01 06:03:39,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:03:39,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:03:39,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:03:39,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:03:39,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39" (1/1) ... [2023-04-01 06:03:40,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:03:40,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:03:40,023 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 06:03:40,025 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 06:03:40,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:03:40,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:03:40,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 06:03:40,050 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:03:40,050 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 06:03:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 06:03:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 06:03:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 06:03:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 06:03:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2023-04-01 06:03:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 06:03:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 06:03:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 06:03:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 06:03:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 06:03:40,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 06:03:40,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 06:03:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 06:03:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 06:03:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 06:03:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 06:03:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 06:03:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 06:03:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 06:03:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 06:03:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 06:03:40,053 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 06:03:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 06:03:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 06:03:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:03:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 06:03:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 06:03:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 06:03:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 06:03:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 06:03:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:03:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:03:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:03:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:03:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 06:03:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 06:03:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 06:03:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 06:03:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 06:03:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 06:03:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 06:03:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 06:03:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 06:03:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 06:03:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 06:03:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 06:03:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 06:03:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2023-04-01 06:03:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2023-04-01 06:03:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 06:03:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 06:03:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 06:03:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 06:03:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 06:03:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 06:03:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 06:03:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2023-04-01 06:03:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 06:03:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 06:03:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2023-04-01 06:03:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 06:03:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 06:03:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 06:03:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 06:03:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 06:03:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 06:03:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 06:03:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 06:03:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 06:03:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:03:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 06:03:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 06:03:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:03:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 06:03:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 06:03:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:03:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 06:03:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 06:03:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 06:03:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 06:03:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 06:03:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 06:03:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 06:03:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 06:03:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 06:03:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:03:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 06:03:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:03:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:03:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:03:40,181 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:03:40,183 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:03:40,646 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:03:40,735 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:03:40,736 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 06:03:40,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:03:40 BoogieIcfgContainer [2023-04-01 06:03:40,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:03:40,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:03:40,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:03:40,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:03:40,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:03:39" (1/3) ... [2023-04-01 06:03:40,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243ad4bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:03:40, skipping insertion in model container [2023-04-01 06:03:40,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:39" (2/3) ... [2023-04-01 06:03:40,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243ad4bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:03:40, skipping insertion in model container [2023-04-01 06:03:40,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:03:40" (3/3) ... [2023-04-01 06:03:40,743 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product62.cil.c [2023-04-01 06:03:40,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:03:40,779 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:03:40,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:03:40,819 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;@4f51cae5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:03:40,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:03:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 80 states have (on average 1.2625) internal successors, (101), 96 states have internal predecessors, (101), 56 states have call successors, (56), 35 states have call predecessors, (56), 35 states have return successors, (56), 50 states have call predecessors, (56), 56 states have call successors, (56) [2023-04-01 06:03:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 06:03:40,829 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:40,830 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:03:40,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:40,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:40,834 INFO L85 PathProgramCache]: Analyzing trace with hash -893228371, now seen corresponding path program 1 times [2023-04-01 06:03:40,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:40,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673815279] [2023-04-01 06:03:40,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:40,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:03:40,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:40,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673815279] [2023-04-01 06:03:40,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673815279] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:40,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:40,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 06:03:41,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840354457] [2023-04-01 06:03:41,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:41,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 06:03:41,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:41,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 06:03:41,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 06:03:41,023 INFO L87 Difference]: Start difference. First operand has 174 states, 80 states have (on average 1.2625) internal successors, (101), 96 states have internal predecessors, (101), 56 states have call successors, (56), 35 states have call predecessors, (56), 35 states have return successors, (56), 50 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 06:03:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:41,084 INFO L93 Difference]: Finished difference Result 278 states and 337 transitions. [2023-04-01 06:03:41,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 06:03:41,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 52 [2023-04-01 06:03:41,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:41,094 INFO L225 Difference]: With dead ends: 278 [2023-04-01 06:03:41,094 INFO L226 Difference]: Without dead ends: 141 [2023-04-01 06:03:41,103 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 06:03:41,106 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:41,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:03:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-04-01 06:03:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-04-01 06:03:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 84 states have internal predecessors, (87), 41 states have call successors, (41), 33 states have call predecessors, (41), 28 states have return successors, (36), 30 states have call predecessors, (36), 36 states have call successors, (36) [2023-04-01 06:03:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 164 transitions. [2023-04-01 06:03:41,158 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 164 transitions. Word has length 52 [2023-04-01 06:03:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:41,158 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 164 transitions. [2023-04-01 06:03:41,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 06:03:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 164 transitions. [2023-04-01 06:03:41,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 06:03:41,161 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:41,161 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:03:41,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:03:41,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:41,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:41,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1547394919, now seen corresponding path program 1 times [2023-04-01 06:03:41,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:41,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388122054] [2023-04-01 06:03:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:41,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:03:41,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:41,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388122054] [2023-04-01 06:03:41,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388122054] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:41,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:41,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:03:41,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330750967] [2023-04-01 06:03:41,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:41,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:03:41,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:41,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:03:41,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:03:41,270 INFO L87 Difference]: Start difference. First operand 141 states and 164 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 06:03:41,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:41,308 INFO L93 Difference]: Finished difference Result 232 states and 271 transitions. [2023-04-01 06:03:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:03:41,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 53 [2023-04-01 06:03:41,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:41,310 INFO L225 Difference]: With dead ends: 232 [2023-04-01 06:03:41,310 INFO L226 Difference]: Without dead ends: 133 [2023-04-01 06:03:41,311 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 06:03:41,312 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 9 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:41,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 253 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:03:41,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-04-01 06:03:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-04-01 06:03:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 79 states have internal predecessors, (81), 38 states have call successors, (38), 32 states have call predecessors, (38), 28 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-01 06:03:41,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2023-04-01 06:03:41,323 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 53 [2023-04-01 06:03:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:41,323 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2023-04-01 06:03:41,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 06:03:41,323 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2023-04-01 06:03:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 06:03:41,325 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:41,325 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:03:41,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:03:41,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:41,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash -319039467, now seen corresponding path program 1 times [2023-04-01 06:03:41,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:41,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797990370] [2023-04-01 06:03:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:41,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:03:41,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:41,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797990370] [2023-04-01 06:03:41,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797990370] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:41,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:41,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:03:41,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543630668] [2023-04-01 06:03:41,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:41,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:03:41,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:41,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:03:41,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:03:41,503 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 06:03:41,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:41,709 INFO L93 Difference]: Finished difference Result 241 states and 282 transitions. [2023-04-01 06:03:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 06:03:41,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 56 [2023-04-01 06:03:41,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:41,711 INFO L225 Difference]: With dead ends: 241 [2023-04-01 06:03:41,711 INFO L226 Difference]: Without dead ends: 133 [2023-04-01 06:03:41,712 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 06:03:41,713 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 209 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:41,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 371 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:03:41,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-04-01 06:03:41,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-04-01 06:03:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 78 states have internal predecessors, (80), 38 states have call successors, (38), 32 states have call predecessors, (38), 28 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-01 06:03:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 152 transitions. [2023-04-01 06:03:41,724 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 152 transitions. Word has length 56 [2023-04-01 06:03:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:41,725 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 152 transitions. [2023-04-01 06:03:41,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 06:03:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 152 transitions. [2023-04-01 06:03:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-01 06:03:41,727 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:41,727 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:03:41,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:03:41,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:41,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:41,728 INFO L85 PathProgramCache]: Analyzing trace with hash 21358604, now seen corresponding path program 1 times [2023-04-01 06:03:41,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:41,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734836245] [2023-04-01 06:03:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:41,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:03:41,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:41,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734836245] [2023-04-01 06:03:41,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734836245] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:41,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:41,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:03:41,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737406381] [2023-04-01 06:03:41,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:41,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:03:41,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:03:41,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:03:41,879 INFO L87 Difference]: Start difference. First operand 133 states and 152 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 06:03:42,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:42,234 INFO L93 Difference]: Finished difference Result 351 states and 417 transitions. [2023-04-01 06:03:42,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 06:03:42,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 73 [2023-04-01 06:03:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:42,242 INFO L225 Difference]: With dead ends: 351 [2023-04-01 06:03:42,242 INFO L226 Difference]: Without dead ends: 243 [2023-04-01 06:03:42,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 06:03:42,251 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 199 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:42,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 177 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:03:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-04-01 06:03:42,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 226. [2023-04-01 06:03:42,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 119 states have (on average 1.1680672268907564) internal successors, (139), 130 states have internal predecessors, (139), 53 states have call successors, (53), 49 states have call predecessors, (53), 53 states have return successors, (59), 53 states have call predecessors, (59), 49 states have call successors, (59) [2023-04-01 06:03:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 251 transitions. [2023-04-01 06:03:42,289 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 251 transitions. Word has length 73 [2023-04-01 06:03:42,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:42,289 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 251 transitions. [2023-04-01 06:03:42,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 06:03:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 251 transitions. [2023-04-01 06:03:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 06:03:42,295 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:42,295 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:03:42,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:03:42,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:42,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:42,296 INFO L85 PathProgramCache]: Analyzing trace with hash 680846452, now seen corresponding path program 1 times [2023-04-01 06:03:42,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:42,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459478341] [2023-04-01 06:03:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:42,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 06:03:42,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:42,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459478341] [2023-04-01 06:03:42,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459478341] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:42,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:42,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:03:42,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900340444] [2023-04-01 06:03:42,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:42,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:03:42,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:42,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:03:42,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:03:42,507 INFO L87 Difference]: Start difference. First operand 226 states and 251 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-01 06:03:42,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:42,831 INFO L93 Difference]: Finished difference Result 443 states and 507 transitions. [2023-04-01 06:03:42,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 06:03:42,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 83 [2023-04-01 06:03:42,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:42,834 INFO L225 Difference]: With dead ends: 443 [2023-04-01 06:03:42,834 INFO L226 Difference]: Without dead ends: 242 [2023-04-01 06:03:42,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-01 06:03:42,837 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 148 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:42,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 310 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:03:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-04-01 06:03:42,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 225. [2023-04-01 06:03:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 118 states have (on average 1.152542372881356) internal successors, (136), 129 states have internal predecessors, (136), 53 states have call successors, (53), 49 states have call predecessors, (53), 53 states have return successors, (59), 53 states have call predecessors, (59), 49 states have call successors, (59) [2023-04-01 06:03:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 248 transitions. [2023-04-01 06:03:42,865 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 248 transitions. Word has length 83 [2023-04-01 06:03:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:42,867 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 248 transitions. [2023-04-01 06:03:42,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-01 06:03:42,867 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 248 transitions. [2023-04-01 06:03:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-01 06:03:42,868 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:42,869 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:03:42,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:03:42,869 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:42,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash 860148278, now seen corresponding path program 1 times [2023-04-01 06:03:42,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:42,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501214347] [2023-04-01 06:03:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:42,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:03:43,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:43,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501214347] [2023-04-01 06:03:43,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501214347] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:43,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:43,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:03:43,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070474366] [2023-04-01 06:03:43,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:43,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:03:43,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:43,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:03:43,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:03:43,276 INFO L87 Difference]: Start difference. First operand 225 states and 248 transitions. Second operand has 12 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (19), 7 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 06:03:43,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:43,660 INFO L93 Difference]: Finished difference Result 585 states and 669 transitions. [2023-04-01 06:03:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 06:03:43,661 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (19), 7 states have call predecessors, (19), 4 states have call successors, (19) Word has length 96 [2023-04-01 06:03:43,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:43,665 INFO L225 Difference]: With dead ends: 585 [2023-04-01 06:03:43,666 INFO L226 Difference]: Without dead ends: 385 [2023-04-01 06:03:43,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-04-01 06:03:43,670 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 257 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:43,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 942 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:03:43,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-04-01 06:03:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 378. [2023-04-01 06:03:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 204 states have (on average 1.1519607843137254) internal successors, (235), 222 states have internal predecessors, (235), 88 states have call successors, (88), 82 states have call predecessors, (88), 85 states have return successors, (106), 88 states have call predecessors, (106), 84 states have call successors, (106) [2023-04-01 06:03:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 429 transitions. [2023-04-01 06:03:43,707 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 429 transitions. Word has length 96 [2023-04-01 06:03:43,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:43,708 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 429 transitions. [2023-04-01 06:03:43,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 4 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (19), 7 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 06:03:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 429 transitions. [2023-04-01 06:03:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 06:03:43,713 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:43,713 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:03:43,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:03:43,713 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:43,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:43,714 INFO L85 PathProgramCache]: Analyzing trace with hash 794496642, now seen corresponding path program 1 times [2023-04-01 06:03:43,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:43,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851619094] [2023-04-01 06:03:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:43,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 06:03:43,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:43,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851619094] [2023-04-01 06:03:43,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851619094] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:43,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:43,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:03:43,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922995393] [2023-04-01 06:03:43,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:43,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:03:43,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:03:43,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:03:43,991 INFO L87 Difference]: Start difference. First operand 378 states and 429 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2023-04-01 06:03:44,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:44,793 INFO L93 Difference]: Finished difference Result 1182 states and 1378 transitions. [2023-04-01 06:03:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 06:03:44,794 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 99 [2023-04-01 06:03:44,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:44,798 INFO L225 Difference]: With dead ends: 1182 [2023-04-01 06:03:44,798 INFO L226 Difference]: Without dead ends: 892 [2023-04-01 06:03:44,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-04-01 06:03:44,800 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 330 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:44,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 282 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:03:44,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2023-04-01 06:03:44,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 775. [2023-04-01 06:03:44,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 423 states have (on average 1.1583924349881796) internal successors, (490), 459 states have internal predecessors, (490), 174 states have call successors, (174), 163 states have call predecessors, (174), 177 states have return successors, (222), 181 states have call predecessors, (222), 170 states have call successors, (222) [2023-04-01 06:03:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 886 transitions. [2023-04-01 06:03:44,866 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 886 transitions. Word has length 99 [2023-04-01 06:03:44,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:44,866 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 886 transitions. [2023-04-01 06:03:44,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (26), 5 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2023-04-01 06:03:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 886 transitions. [2023-04-01 06:03:44,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-04-01 06:03:44,870 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:44,870 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-04-01 06:03:44,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:03:44,870 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:44,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1637810653, now seen corresponding path program 1 times [2023-04-01 06:03:44,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:44,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427132957] [2023-04-01 06:03:44,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:44,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 06:03:45,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:45,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427132957] [2023-04-01 06:03:45,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427132957] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:03:45,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972746553] [2023-04-01 06:03:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:45,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:03:45,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:03:45,063 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 06:03:45,064 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 06:03:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:45,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 06:03:45,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:03:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:03:45,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:03:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 06:03:45,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972746553] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:03:45,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1910120210] [2023-04-01 06:03:45,911 INFO L159 IcfgInterpreter]: Started Sifa with 122 locations of interest [2023-04-01 06:03:45,911 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:03:45,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:03:45,918 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:03:45,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:03:46,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:03:46,140 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 36 for LOIs [2023-04-01 06:03:46,419 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 36 for LOIs [2023-04-01 06:03:46,474 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 36 for LOIs [2023-04-01 06:03:49,728 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 52 for LOIs [2023-04-01 06:03:49,734 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 29 for LOIs [2023-04-01 06:03:49,999 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 33 for LOIs [2023-04-01 06:03:50,004 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 54 for LOIs [2023-04-01 06:03:50,278 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 52 for LOIs [2023-04-01 06:03:50,503 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 40 for LOIs [2023-04-01 06:03:50,832 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 24 for LOIs [2023-04-01 06:03:50,932 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 24 for LOIs [2023-04-01 06:03:50,938 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 36 for LOIs [2023-04-01 06:03:51,021 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 45 for LOIs [2023-04-01 06:03:51,055 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 45 for LOIs [2023-04-01 06:03:51,061 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__lowWaterSensor with input of size 26 for LOIs [2023-04-01 06:03:51,063 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 35 for LOIs [2023-04-01 06:03:51,065 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 35 for LOIs [2023-04-01 06:03:51,142 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 35 for LOIs [2023-04-01 06:03:51,147 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:03:51,148 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:03:51,149 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 31 for LOIs [2023-04-01 06:03:51,252 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 39 for LOIs [2023-04-01 06:03:51,254 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 31 for LOIs [2023-04-01 06:03:51,256 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 23 for LOIs [2023-04-01 06:03:51,300 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 20 for LOIs [2023-04-01 06:03:51,302 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:03:51,304 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:03:51,306 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:03:51,307 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:03:57,442 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8966#(and (<= 1 |#StackHeapBarrier|) (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (= ~head~0.base 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= ~switchedOnBeforeTS~0 0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 06:03:57,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:03:57,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:03:57,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-04-01 06:03:57,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655261946] [2023-04-01 06:03:57,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:03:57,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 06:03:57,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:57,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 06:03:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=6538, Unknown=0, NotChecked=0, Total=7140 [2023-04-01 06:03:57,449 INFO L87 Difference]: Start difference. First operand 775 states and 886 transitions. Second operand has 19 states, 12 states have (on average 11.583333333333334) internal successors, (139), 15 states have internal predecessors, (139), 7 states have call successors, (61), 6 states have call predecessors, (61), 11 states have return successors, (62), 10 states have call predecessors, (62), 6 states have call successors, (62) [2023-04-01 06:03:58,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:58,292 INFO L93 Difference]: Finished difference Result 1669 states and 1951 transitions. [2023-04-01 06:03:58,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 06:03:58,293 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 11.583333333333334) internal successors, (139), 15 states have internal predecessors, (139), 7 states have call successors, (61), 6 states have call predecessors, (61), 11 states have return successors, (62), 10 states have call predecessors, (62), 6 states have call successors, (62) Word has length 165 [2023-04-01 06:03:58,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:58,310 INFO L225 Difference]: With dead ends: 1669 [2023-04-01 06:03:58,310 INFO L226 Difference]: Without dead ends: 982 [2023-04-01 06:03:58,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 399 SyntacticMatches, 28 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5273 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=768, Invalid=9534, Unknown=0, NotChecked=0, Total=10302 [2023-04-01 06:03:58,315 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 429 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:58,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1997 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:03:58,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-04-01 06:03:58,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 881. [2023-04-01 06:03:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 482 states have (on average 1.1556016597510372) internal successors, (557), 532 states have internal predecessors, (557), 200 states have call successors, (200), 189 states have call predecessors, (200), 198 states have return successors, (249), 197 states have call predecessors, (249), 196 states have call successors, (249) [2023-04-01 06:03:58,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1006 transitions. [2023-04-01 06:03:58,425 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1006 transitions. Word has length 165 [2023-04-01 06:03:58,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:58,426 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1006 transitions. [2023-04-01 06:03:58,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 11.583333333333334) internal successors, (139), 15 states have internal predecessors, (139), 7 states have call successors, (61), 6 states have call predecessors, (61), 11 states have return successors, (62), 10 states have call predecessors, (62), 6 states have call successors, (62) [2023-04-01 06:03:58,426 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1006 transitions. [2023-04-01 06:03:58,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-04-01 06:03:58,428 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:58,428 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 06:03:58,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 06:03:58,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:03:58,636 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:58,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash -561687413, now seen corresponding path program 1 times [2023-04-01 06:03:58,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:58,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214049499] [2023-04-01 06:03:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:58,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-04-01 06:03:59,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:59,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214049499] [2023-04-01 06:03:59,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214049499] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:03:59,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296743614] [2023-04-01 06:03:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:59,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:03:59,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:03:59,031 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 06:03:59,032 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 06:03:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:59,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 06:03:59,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:03:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-04-01 06:03:59,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:03:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-04-01 06:03:59,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296743614] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:03:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1464322316] [2023-04-01 06:03:59,615 INFO L159 IcfgInterpreter]: Started Sifa with 111 locations of interest [2023-04-01 06:03:59,615 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:03:59,615 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:03:59,615 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:03:59,615 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:03:59,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:03:59,783 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 36 for LOIs [2023-04-01 06:03:59,886 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 36 for LOIs [2023-04-01 06:03:59,912 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 36 for LOIs [2023-04-01 06:04:02,816 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 74 for LOIs [2023-04-01 06:04:02,839 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 32 for LOIs [2023-04-01 06:04:02,972 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 36 for LOIs [2023-04-01 06:04:02,976 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 33 for LOIs [2023-04-01 06:04:03,009 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 26 for LOIs [2023-04-01 06:04:03,024 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2023-04-01 06:04:03,120 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 24 for LOIs [2023-04-01 06:04:03,182 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 24 for LOIs [2023-04-01 06:04:03,185 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 36 for LOIs [2023-04-01 06:04:03,219 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 36 for LOIs [2023-04-01 06:04:03,292 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 36 for LOIs [2023-04-01 06:04:03,297 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__lowWaterSensor with input of size 26 for LOIs [2023-04-01 06:04:03,299 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:04:03,300 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:04:03,301 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 32 for LOIs [2023-04-01 06:04:03,483 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 50 for LOIs [2023-04-01 06:04:03,486 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 32 for LOIs [2023-04-01 06:04:03,488 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 27 for LOIs [2023-04-01 06:04:03,507 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 24 for LOIs [2023-04-01 06:04:03,509 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:04:03,510 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:04:03,512 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:04:03,513 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:04:08,765 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13994#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 1) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= ~pumpRunning~0 (+ 2147483649 ~waterLevel~0)) (<= ~pumpRunning~0 |#StackHeapBarrier|) (= ~switchedOnBeforeTS~0 0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 06:04:08,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:04:08,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:04:08,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2023-04-01 06:04:08,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478902988] [2023-04-01 06:04:08,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:04:08,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-01 06:04:08,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:04:08,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-01 06:04:08,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=6144, Unknown=0, NotChecked=0, Total=6642 [2023-04-01 06:04:08,776 INFO L87 Difference]: Start difference. First operand 881 states and 1006 transitions. Second operand has 22 states, 16 states have (on average 8.75) internal successors, (140), 16 states have internal predecessors, (140), 5 states have call successors, (57), 3 states have call predecessors, (57), 11 states have return successors, (62), 11 states have call predecessors, (62), 5 states have call successors, (62) [2023-04-01 06:04:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:04:10,415 INFO L93 Difference]: Finished difference Result 3436 states and 4134 transitions. [2023-04-01 06:04:10,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-01 06:04:10,415 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 8.75) internal successors, (140), 16 states have internal predecessors, (140), 5 states have call successors, (57), 3 states have call predecessors, (57), 11 states have return successors, (62), 11 states have call predecessors, (62), 5 states have call successors, (62) Word has length 213 [2023-04-01 06:04:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:04:10,461 INFO L225 Difference]: With dead ends: 3436 [2023-04-01 06:04:10,461 INFO L226 Difference]: Without dead ends: 2598 [2023-04-01 06:04:10,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 560 SyntacticMatches, 19 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6020 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=827, Invalid=14425, Unknown=0, NotChecked=0, Total=15252 [2023-04-01 06:04:10,474 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 319 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 2921 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:04:10,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 3075 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2921 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:04:10,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2023-04-01 06:04:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2149. [2023-04-01 06:04:10,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1188 states have (on average 1.1237373737373737) internal successors, (1335), 1287 states have internal predecessors, (1335), 480 states have call successors, (480), 464 states have call predecessors, (480), 480 states have return successors, (600), 475 states have call predecessors, (600), 476 states have call successors, (600) [2023-04-01 06:04:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 2415 transitions. [2023-04-01 06:04:10,731 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 2415 transitions. Word has length 213 [2023-04-01 06:04:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:04:10,732 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 2415 transitions. [2023-04-01 06:04:10,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 8.75) internal successors, (140), 16 states have internal predecessors, (140), 5 states have call successors, (57), 3 states have call predecessors, (57), 11 states have return successors, (62), 11 states have call predecessors, (62), 5 states have call successors, (62) [2023-04-01 06:04:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 2415 transitions. [2023-04-01 06:04:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-04-01 06:04:10,752 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:04:10,752 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 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, 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] [2023-04-01 06:04:10,759 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 06:04:10,953 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,SelfDestructingSolverStorable8 [2023-04-01 06:04:10,954 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:04:10,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:04:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash -609891353, now seen corresponding path program 1 times [2023-04-01 06:04:10,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:04:10,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458112490] [2023-04-01 06:04:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:04:10,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:04:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:04:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 52 proven. 21 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-04-01 06:04:11,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:04:11,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458112490] [2023-04-01 06:04:11,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458112490] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:04:11,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698370052] [2023-04-01 06:04:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:04:11,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:04:11,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:04:11,473 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 06:04:11,474 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 06:04:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:04:11,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 46 conjunts are in the unsatisfiable core [2023-04-01 06:04:11,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:04:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 111 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-01 06:04:11,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:04:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 65 proven. 8 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-04-01 06:04:13,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698370052] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:04:13,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [377530025] [2023-04-01 06:04:13,596 INFO L159 IcfgInterpreter]: Started Sifa with 114 locations of interest [2023-04-01 06:04:13,596 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:04:13,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:04:13,597 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:04:13,597 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:04:13,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:04:13,689 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 36 for LOIs [2023-04-01 06:04:13,764 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 36 for LOIs [2023-04-01 06:04:13,793 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 36 for LOIs [2023-04-01 06:04:20,456 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 98 for LOIs [2023-04-01 06:04:20,469 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 40 for LOIs [2023-04-01 06:04:20,729 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 41 for LOIs [2023-04-01 06:04:20,734 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 45 for LOIs [2023-04-01 06:04:20,859 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 30 for LOIs [2023-04-01 06:04:20,877 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 30 for LOIs [2023-04-01 06:04:20,989 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 28 for LOIs [2023-04-01 06:04:21,076 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 28 for LOIs [2023-04-01 06:04:21,080 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 40 for LOIs [2023-04-01 06:04:21,118 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 48 for LOIs [2023-04-01 06:04:21,211 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 48 for LOIs [2023-04-01 06:04:21,219 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__lowWaterSensor with input of size 26 for LOIs [2023-04-01 06:04:21,221 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 47 for LOIs [2023-04-01 06:04:21,224 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 67 for LOIs [2023-04-01 06:04:21,232 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:04:21,234 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:04:21,235 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 52 for LOIs [2023-04-01 06:04:21,473 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 69 for LOIs [2023-04-01 06:04:21,478 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 52 for LOIs [2023-04-01 06:04:21,481 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 35 for LOIs [2023-04-01 06:04:21,505 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 32 for LOIs [2023-04-01 06:04:21,507 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:04:21,509 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:04:21,511 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:04:21,513 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:04:32,770 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23481#(and (not (= ~pumpRunning~0 0)) (= ~head~0.offset 0) (= 1 ~systemActive~0) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= ~pumpRunning~0 |#StackHeapBarrier|) (<= 0 (+ ~waterLevel~0 ~methaneLevelCritical~0 2147483648)) (<= (+ ~pumpRunning~0 ~methaneLevelCritical~0) 2) (= ~switchedOnBeforeTS~0 0) (<= ~methaneLevelCritical~0 (+ 2147483649 ~waterLevel~0)) (<= ~pumpRunning~0 (+ ~methaneLevelCritical~0 1)) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 06:04:32,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:04:32,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:04:32,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 15] total 36 [2023-04-01 06:04:32,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446168861] [2023-04-01 06:04:32,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:04:32,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-04-01 06:04:32,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:04:32,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-04-01 06:04:32,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=10037, Unknown=0, NotChecked=0, Total=10712 [2023-04-01 06:04:32,775 INFO L87 Difference]: Start difference. First operand 2149 states and 2415 transitions. Second operand has 36 states, 27 states have (on average 5.814814814814815) internal successors, (157), 27 states have internal predecessors, (157), 12 states have call successors, (66), 7 states have call predecessors, (66), 19 states have return successors, (72), 21 states have call predecessors, (72), 12 states have call successors, (72) [2023-04-01 06:04:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:04:34,978 INFO L93 Difference]: Finished difference Result 4055 states and 4703 transitions. [2023-04-01 06:04:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-04-01 06:04:34,979 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 27 states have (on average 5.814814814814815) internal successors, (157), 27 states have internal predecessors, (157), 12 states have call successors, (66), 7 states have call predecessors, (66), 19 states have return successors, (72), 21 states have call predecessors, (72), 12 states have call successors, (72) Word has length 224 [2023-04-01 06:04:34,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:04:34,980 INFO L225 Difference]: With dead ends: 4055 [2023-04-01 06:04:34,980 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 06:04:34,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 581 SyntacticMatches, 25 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9173 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1265, Invalid=18475, Unknown=0, NotChecked=0, Total=19740 [2023-04-01 06:04:34,990 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 842 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 3243 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 4053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 3243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:04:34,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 739 Invalid, 4053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [810 Valid, 3243 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 06:04:34,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 06:04:34,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 06:04:34,991 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 06:04:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 06:04:34,992 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 224 [2023-04-01 06:04:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:04:34,992 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 06:04:34,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 27 states have (on average 5.814814814814815) internal successors, (157), 27 states have internal predecessors, (157), 12 states have call successors, (66), 7 states have call predecessors, (66), 19 states have return successors, (72), 21 states have call predecessors, (72), 12 states have call successors, (72) [2023-04-01 06:04:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 06:04:34,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 06:04:34,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 06:04:35,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 06:04:35,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:04:35,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.