/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_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:03:34,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:03:34,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:03:34,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:03:34,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:03:34,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:03:34,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:03:34,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:03:34,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:03:34,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:03:34,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:03:34,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:03:34,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:03:34,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:03:34,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:03:34,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:03:34,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:03:34,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:03:34,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:03:34,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:03:34,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:03:34,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:03:34,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:03:34,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:03:34,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:03:34,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:03:34,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:03:34,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:03:34,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:03:34,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:03:34,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:03:34,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:03:34,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:03:34,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:03:34,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:03:34,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:03:34,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:03:34,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:03:34,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:03:34,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:03:34,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:03:34,212 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 06:03:34,226 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:03:34,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:03:34,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:03:34,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:03:34,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:03:34,227 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:03:34,227 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:03:34,227 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:03:34,227 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:03:34,227 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:03:34,227 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:03:34,227 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:03:34,228 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:03:34,228 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:03:34,228 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:03:34,228 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:03:34,228 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:03:34,228 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:03:34,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:03:34,229 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:03:34,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:03:34,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:03:34,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:03:34,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:03:34,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:03:34,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:03:34,229 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:03:34,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:03:34,230 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:03:34,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:03:34,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:03:34,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:03:34,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:03:34,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:03:34,231 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:03:34,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:03:34,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:03:34,231 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:03:34,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:03:34,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:03:34,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:03:34,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:03:34,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:03:34,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:03:34,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:03:34,444 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:03:34,445 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:03:34,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product59.cil.c [2023-04-01 06:03:35,513 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:03:35,753 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:03:35,754 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product59.cil.c [2023-04-01 06:03:35,774 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4702dfd14/358fd15abafd4ff0895e558c9d81d923/FLAG2c235e20b [2023-04-01 06:03:35,784 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4702dfd14/358fd15abafd4ff0895e558c9d81d923 [2023-04-01 06:03:35,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:03:35,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:03:35,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:03:35,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:03:35,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:03:35,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:03:35" (1/1) ... [2023-04-01 06:03:35,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a54a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:35, skipping insertion in model container [2023-04-01 06:03:35,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:03:35" (1/1) ... [2023-04-01 06:03:35,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:03:35,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:03:36,082 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_product59.cil.c[17002,17015] [2023-04-01 06:03:36,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:03:36,101 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:03:36,156 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_product59.cil.c[17002,17015] [2023-04-01 06:03:36,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:03:36,175 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:03:36,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:36 WrapperNode [2023-04-01 06:03:36,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:03:36,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:03:36,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:03:36,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:03:36,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:36" (1/1) ... [2023-04-01 06:03:36,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:36" (1/1) ... [2023-04-01 06:03:36,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:36" (1/1) ... [2023-04-01 06:03:36,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:36" (1/1) ... [2023-04-01 06:03:36,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:36" (1/1) ... [2023-04-01 06:03:36,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:36" (1/1) ... [2023-04-01 06:03:36,240 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:36" (1/1) ... [2023-04-01 06:03:36,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:36" (1/1) ... [2023-04-01 06:03:36,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:03:36,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:03:36,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:03:36,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:03:36,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:36" (1/1) ... [2023-04-01 06:03:36,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:03:36,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:03:36,272 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 06:03:36,285 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 06:03:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:03:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:03:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 06:03:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:03:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 06:03:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 06:03:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 06:03:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 06:03:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 06:03:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 06:03:36,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 06:03:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 06:03:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 06:03:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 06:03:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 06:03:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 06:03:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 06:03:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2023-04-01 06:03:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 06:03:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 06:03:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 06:03:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 06:03:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 06:03:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 06:03:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 06:03:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 06:03:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 06:03:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 06:03:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 06:03:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 06:03:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 06:03:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 06:03:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 06:03:36,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2023-04-01 06:03:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2023-04-01 06:03:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2023-04-01 06:03:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 06:03:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 06:03:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 06:03:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 06:03:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:03:36,327 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 06:03:36,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 06:03:36,329 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 06:03:36,329 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 06:03:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:03:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:03:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:03:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:03:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 06:03:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 06:03:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 06:03:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 06:03:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 06:03:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 06:03:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 06:03:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 06:03:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 06:03:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 06:03:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 06:03:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 06:03:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 06:03:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 06:03:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 06:03:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 06:03:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 06:03:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 06:03:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 06:03:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 06:03:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:03:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 06:03:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 06:03:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:03:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 06:03:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 06:03:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:03:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 06:03:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 06:03:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 06:03:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 06:03:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2023-04-01 06:03:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 06:03:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 06:03:36,336 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 06:03:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 06:03:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 06:03:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 06:03:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:03:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 06:03:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:03:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:03:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:03:36,507 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:03:36,515 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:03:36,964 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:03:37,108 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:03:37,108 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 06:03:37,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:03:37 BoogieIcfgContainer [2023-04-01 06:03:37,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:03:37,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:03:37,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:03:37,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:03:37,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:03:35" (1/3) ... [2023-04-01 06:03:37,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437589c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:03:37, skipping insertion in model container [2023-04-01 06:03:37,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:03:36" (2/3) ... [2023-04-01 06:03:37,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437589c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:03:37, skipping insertion in model container [2023-04-01 06:03:37,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:03:37" (3/3) ... [2023-04-01 06:03:37,121 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2023-04-01 06:03:37,135 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:03:37,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:03:37,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:03:37,189 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;@681111b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:03:37,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:03:37,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 92 states have internal predecessors, (98), 53 states have call successors, (53), 34 states have call predecessors, (53), 34 states have return successors, (53), 49 states have call predecessors, (53), 53 states have call successors, (53) [2023-04-01 06:03:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 06:03:37,200 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:37,201 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 06:03:37,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:37,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:37,206 INFO L85 PathProgramCache]: Analyzing trace with hash -322394193, now seen corresponding path program 1 times [2023-04-01 06:03:37,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:37,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924531289] [2023-04-01 06:03:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:37,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:37,441 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 06:03:37,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:37,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924531289] [2023-04-01 06:03:37,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924531289] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:37,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:37,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 06:03:37,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110875456] [2023-04-01 06:03:37,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:37,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 06:03:37,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:37,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 06:03:37,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 06:03:37,467 INFO L87 Difference]: Start difference. First operand has 167 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 92 states have internal predecessors, (98), 53 states have call successors, (53), 34 states have call predecessors, (53), 34 states have return successors, (53), 49 states have call predecessors, (53), 53 states have call successors, (53) 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 06:03:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:37,515 INFO L93 Difference]: Finished difference Result 264 states and 319 transitions. [2023-04-01 06:03:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 06:03:37,517 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 06:03:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:37,526 INFO L225 Difference]: With dead ends: 264 [2023-04-01 06:03:37,526 INFO L226 Difference]: Without dead ends: 134 [2023-04-01 06:03:37,529 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 06:03:37,531 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:37,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:03:37,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-04-01 06:03:37,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-04-01 06:03:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 80 states have internal predecessors, (84), 38 states have call successors, (38), 32 states have call predecessors, (38), 27 states have return successors, (33), 29 states have call predecessors, (33), 33 states have call successors, (33) [2023-04-01 06:03:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 155 transitions. [2023-04-01 06:03:37,580 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 155 transitions. Word has length 52 [2023-04-01 06:03:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:37,581 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 155 transitions. [2023-04-01 06:03:37,581 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 06:03:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 155 transitions. [2023-04-01 06:03:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 06:03:37,583 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:37,583 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 06:03:37,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:03:37,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:37,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:37,584 INFO L85 PathProgramCache]: Analyzing trace with hash -803935129, now seen corresponding path program 1 times [2023-04-01 06:03:37,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:37,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524153155] [2023-04-01 06:03:37,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:37,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:37,714 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 06:03:37,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:37,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524153155] [2023-04-01 06:03:37,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524153155] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:37,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:37,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:03:37,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757926415] [2023-04-01 06:03:37,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:37,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:03:37,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:37,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:03:37,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:03:37,718 INFO L87 Difference]: Start difference. First operand 134 states and 155 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 06:03:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:37,775 INFO L93 Difference]: Finished difference Result 215 states and 247 transitions. [2023-04-01 06:03:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:03:37,776 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 06:03:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:37,777 INFO L225 Difference]: With dead ends: 215 [2023-04-01 06:03:37,777 INFO L226 Difference]: Without dead ends: 126 [2023-04-01 06:03:37,778 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 06:03:37,779 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 11 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:37,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 234 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:03:37,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-04-01 06:03:37,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-04-01 06:03:37,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 75 states have internal predecessors, (78), 35 states have call successors, (35), 31 states have call predecessors, (35), 27 states have return successors, (31), 27 states have call predecessors, (31), 31 states have call successors, (31) [2023-04-01 06:03:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2023-04-01 06:03:37,792 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 53 [2023-04-01 06:03:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:37,793 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2023-04-01 06:03:37,793 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 06:03:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2023-04-01 06:03:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 06:03:37,794 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:37,794 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 06:03:37,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:03:37,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:37,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1626188772, now seen corresponding path program 1 times [2023-04-01 06:03:37,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:37,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921420058] [2023-04-01 06:03:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:37,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:37,966 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 06:03:37,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:37,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921420058] [2023-04-01 06:03:37,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921420058] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:37,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:37,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:03:37,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527246719] [2023-04-01 06:03:37,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:37,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:03:37,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:37,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:03:37,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:03:37,970 INFO L87 Difference]: Start difference. First operand 126 states and 144 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 06:03:38,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:38,324 INFO L93 Difference]: Finished difference Result 377 states and 446 transitions. [2023-04-01 06:03:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 06:03:38,324 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 06:03:38,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:38,327 INFO L225 Difference]: With dead ends: 377 [2023-04-01 06:03:38,327 INFO L226 Difference]: Without dead ends: 276 [2023-04-01 06:03:38,328 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 06:03:38,328 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 237 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:38,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 576 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:03:38,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-04-01 06:03:38,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 268. [2023-04-01 06:03:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 140 states have (on average 1.2714285714285714) internal successors, (178), 164 states have internal predecessors, (178), 71 states have call successors, (71), 62 states have call predecessors, (71), 56 states have return successors, (68), 55 states have call predecessors, (68), 67 states have call successors, (68) [2023-04-01 06:03:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 317 transitions. [2023-04-01 06:03:38,353 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 317 transitions. Word has length 56 [2023-04-01 06:03:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:38,354 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 317 transitions. [2023-04-01 06:03:38,354 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 06:03:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 317 transitions. [2023-04-01 06:03:38,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-01 06:03:38,355 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:38,356 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] [2023-04-01 06:03:38,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:03:38,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:38,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:38,356 INFO L85 PathProgramCache]: Analyzing trace with hash -152813913, now seen corresponding path program 1 times [2023-04-01 06:03:38,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:38,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721266696] [2023-04-01 06:03:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:38,425 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 06:03:38,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:38,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721266696] [2023-04-01 06:03:38,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721266696] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:38,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:38,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 06:03:38,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494274324] [2023-04-01 06:03:38,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:38,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 06:03:38,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:38,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 06:03:38,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 06:03:38,427 INFO L87 Difference]: Start difference. First operand 268 states and 317 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 06:03:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:38,642 INFO L93 Difference]: Finished difference Result 618 states and 766 transitions. [2023-04-01 06:03:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 06:03:38,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 61 [2023-04-01 06:03:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:38,654 INFO L225 Difference]: With dead ends: 618 [2023-04-01 06:03:38,654 INFO L226 Difference]: Without dead ends: 375 [2023-04-01 06:03:38,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:03:38,668 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 103 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:38,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 497 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:03:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-04-01 06:03:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 361. [2023-04-01 06:03:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 197 states have (on average 1.2233502538071066) internal successors, (241), 217 states have internal predecessors, (241), 87 states have call successors, (87), 80 states have call predecessors, (87), 76 states have return successors, (99), 76 states have call predecessors, (99), 83 states have call successors, (99) [2023-04-01 06:03:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 427 transitions. [2023-04-01 06:03:38,712 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 427 transitions. Word has length 61 [2023-04-01 06:03:38,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:38,712 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 427 transitions. [2023-04-01 06:03:38,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 06:03:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 427 transitions. [2023-04-01 06:03:38,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-01 06:03:38,718 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:38,718 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] [2023-04-01 06:03:38,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:03:38,719 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:38,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:38,719 INFO L85 PathProgramCache]: Analyzing trace with hash -583161963, now seen corresponding path program 1 times [2023-04-01 06:03:38,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:38,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502323445] [2023-04-01 06:03:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:39,130 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 06:03:39,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:39,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502323445] [2023-04-01 06:03:39,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502323445] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:39,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:39,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:03:39,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517268866] [2023-04-01 06:03:39,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:39,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:03:39,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:39,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:03:39,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:03:39,134 INFO L87 Difference]: Start difference. First operand 361 states and 427 transitions. Second operand has 12 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-01 06:03:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:39,565 INFO L93 Difference]: Finished difference Result 1111 states and 1355 transitions. [2023-04-01 06:03:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 06:03:39,566 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18) Word has length 91 [2023-04-01 06:03:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:39,570 INFO L225 Difference]: With dead ends: 1111 [2023-04-01 06:03:39,570 INFO L226 Difference]: Without dead ends: 775 [2023-04-01 06:03:39,571 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 06:03:39,572 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 269 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:39,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1015 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:03:39,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2023-04-01 06:03:39,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 757. [2023-04-01 06:03:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 428 states have (on average 1.22196261682243) internal successors, (523), 462 states have internal predecessors, (523), 172 states have call successors, (172), 157 states have call predecessors, (172), 156 states have return successors, (218), 166 states have call predecessors, (218), 168 states have call successors, (218) [2023-04-01 06:03:39,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 913 transitions. [2023-04-01 06:03:39,627 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 913 transitions. Word has length 91 [2023-04-01 06:03:39,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:39,627 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 913 transitions. [2023-04-01 06:03:39,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-01 06:03:39,627 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 913 transitions. [2023-04-01 06:03:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 06:03:39,630 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:39,630 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] [2023-04-01 06:03:39,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:03:39,630 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:39,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1914936515, now seen corresponding path program 1 times [2023-04-01 06:03:39,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:39,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614546947] [2023-04-01 06:03:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:39,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:39,965 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 06:03:39,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:39,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614546947] [2023-04-01 06:03:39,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614546947] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:03:39,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:03:39,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:03:39,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032032140] [2023-04-01 06:03:39,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:03:39,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:03:39,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:39,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:03:39,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:03:39,968 INFO L87 Difference]: Start difference. First operand 757 states and 913 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 06:03:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:40,669 INFO L93 Difference]: Finished difference Result 2467 states and 3074 transitions. [2023-04-01 06:03:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 06:03:40,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 94 [2023-04-01 06:03:40,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:40,678 INFO L225 Difference]: With dead ends: 2467 [2023-04-01 06:03:40,679 INFO L226 Difference]: Without dead ends: 1885 [2023-04-01 06:03:40,681 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 06:03:40,682 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 325 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:40,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 331 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:03:40,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2023-04-01 06:03:40,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1607. [2023-04-01 06:03:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 906 states have (on average 1.2229580573951435) internal successors, (1108), 973 states have internal predecessors, (1108), 360 states have call successors, (360), 321 states have call predecessors, (360), 340 states have return successors, (495), 367 states have call predecessors, (495), 356 states have call successors, (495) [2023-04-01 06:03:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 1963 transitions. [2023-04-01 06:03:40,819 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 1963 transitions. Word has length 94 [2023-04-01 06:03:40,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:40,820 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 1963 transitions. [2023-04-01 06:03:40,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 06:03:40,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 1963 transitions. [2023-04-01 06:03:40,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-01 06:03:40,825 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:40,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:03:40,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:03:40,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:40,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:40,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1845260213, now seen corresponding path program 1 times [2023-04-01 06:03:40,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:40,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298220654] [2023-04-01 06:03:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:40,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 06:03:41,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:41,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298220654] [2023-04-01 06:03:41,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298220654] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:03:41,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336128377] [2023-04-01 06:03:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:41,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:03:41,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:03:41,020 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 06:03:41,066 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 06:03:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:41,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 06:03:41,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:03:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:03:41,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:03:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 06:03:41,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336128377] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:03:41,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1306781726] [2023-04-01 06:03:41,887 INFO L159 IcfgInterpreter]: Started Sifa with 113 locations of interest [2023-04-01 06:03:41,888 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:03:41,891 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:03:41,894 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:03:41,895 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:03:42,072 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:03:42,128 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 36 for LOIs [2023-04-01 06:03:42,299 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 36 for LOIs [2023-04-01 06:03:42,352 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 36 for LOIs [2023-04-01 06:03:46,379 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 83 for LOIs [2023-04-01 06:03:46,405 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 54 for LOIs [2023-04-01 06:03:46,763 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 50 for LOIs [2023-04-01 06:03:46,770 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 35 for LOIs [2023-04-01 06:03:46,983 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 52 for LOIs [2023-04-01 06:03:47,256 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 24 for LOIs [2023-04-01 06:03:47,327 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 24 for LOIs [2023-04-01 06:03:47,330 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 36 for LOIs [2023-04-01 06:03:47,372 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 34 for LOIs [2023-04-01 06:03:47,396 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 34 for LOIs [2023-04-01 06:03:47,399 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__lowWaterSensor with input of size 26 for LOIs [2023-04-01 06:03:47,402 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 47 for LOIs [2023-04-01 06:03:47,405 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 35 for LOIs [2023-04-01 06:03:47,484 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 35 for LOIs [2023-04-01 06:03:47,488 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:03:47,490 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:03:47,491 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 31 for LOIs [2023-04-01 06:03:47,594 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 39 for LOIs [2023-04-01 06:03:47,596 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 31 for LOIs [2023-04-01 06:03:47,599 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 49 for LOIs [2023-04-01 06:03:47,656 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 20 for LOIs [2023-04-01 06:03:47,658 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:03:47,660 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:03:47,662 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:03:47,663 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:03:53,944 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13006#(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 06:03:53,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:03:53,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:03:53,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-04-01 06:03:53,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980108312] [2023-04-01 06:03:53,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:03:53,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 06:03:53,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:03:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 06:03:53,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=6220, Unknown=0, NotChecked=0, Total=6806 [2023-04-01 06:03:53,954 INFO L87 Difference]: Start difference. First operand 1607 states and 1963 transitions. Second operand has 19 states, 12 states have (on average 10.25) internal successors, (123), 15 states have internal predecessors, (123), 7 states have call successors, (55), 6 states have call predecessors, (55), 11 states have return successors, (55), 10 states have call predecessors, (55), 6 states have call successors, (55) [2023-04-01 06:03:54,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:03:54,989 INFO L93 Difference]: Finished difference Result 3485 states and 4408 transitions. [2023-04-01 06:03:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-01 06:03:54,990 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 10.25) internal successors, (123), 15 states have internal predecessors, (123), 7 states have call successors, (55), 6 states have call predecessors, (55), 11 states have return successors, (55), 10 states have call predecessors, (55), 6 states have call successors, (55) Word has length 146 [2023-04-01 06:03:54,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:03:55,001 INFO L225 Difference]: With dead ends: 3485 [2023-04-01 06:03:55,002 INFO L226 Difference]: Without dead ends: 2053 [2023-04-01 06:03:55,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 354 SyntacticMatches, 19 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5160 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=844, Invalid=10498, Unknown=0, NotChecked=0, Total=11342 [2023-04-01 06:03:55,011 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 403 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:03:55,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1707 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:03:55,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2023-04-01 06:03:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1848. [2023-04-01 06:03:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1042 states have (on average 1.2044145873320538) internal successors, (1255), 1135 states have internal predecessors, (1255), 418 states have call successors, (418), 387 states have call predecessors, (418), 387 states have return successors, (536), 387 states have call predecessors, (536), 414 states have call successors, (536) [2023-04-01 06:03:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2209 transitions. [2023-04-01 06:03:55,127 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2209 transitions. Word has length 146 [2023-04-01 06:03:55,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:03:55,128 INFO L495 AbstractCegarLoop]: Abstraction has 1848 states and 2209 transitions. [2023-04-01 06:03:55,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 10.25) internal successors, (123), 15 states have internal predecessors, (123), 7 states have call successors, (55), 6 states have call predecessors, (55), 11 states have return successors, (55), 10 states have call predecessors, (55), 6 states have call successors, (55) [2023-04-01 06:03:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2209 transitions. [2023-04-01 06:03:55,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-04-01 06:03:55,132 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:03:55,133 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:03:55,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 06:03:55,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:03:55,340 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:03:55,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:03:55,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1343138898, now seen corresponding path program 1 times [2023-04-01 06:03:55,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:03:55,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785204268] [2023-04-01 06:03:55,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:55,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:03:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-04-01 06:03:55,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:03:55,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785204268] [2023-04-01 06:03:55,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785204268] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:03:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414074842] [2023-04-01 06:03:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:03:55,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:03:55,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:03:55,543 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 06:03:55,544 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 06:03:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:03:55,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 06:03:55,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:03:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-01 06:03:55,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:03:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-04-01 06:03:56,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414074842] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:03:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [650979025] [2023-04-01 06:03:56,126 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2023-04-01 06:03:56,126 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:03:56,128 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:03:56,128 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:03:56,128 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:03:56,222 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:03:56,241 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 36 for LOIs [2023-04-01 06:03:56,330 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 36 for LOIs [2023-04-01 06:03:56,360 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 36 for LOIs [2023-04-01 06:04:00,340 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 104 for LOIs [2023-04-01 06:04:00,390 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 72 for LOIs [2023-04-01 06:04:00,648 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 45 for LOIs [2023-04-01 06:04:00,654 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 33 for LOIs [2023-04-01 06:04:00,874 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2023-04-01 06:04:01,007 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 24 for LOIs [2023-04-01 06:04:01,069 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 24 for LOIs [2023-04-01 06:04:01,072 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 36 for LOIs [2023-04-01 06:04:01,107 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 34 for LOIs [2023-04-01 06:04:01,125 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 34 for LOIs [2023-04-01 06:04:01,127 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__lowWaterSensor with input of size 26 for LOIs [2023-04-01 06:04:01,130 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 33 for LOIs [2023-04-01 06:04:01,204 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 33 for LOIs [2023-04-01 06:04:01,208 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 42 for LOIs [2023-04-01 06:04:01,211 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:04:01,213 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:04:01,214 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 32 for LOIs [2023-04-01 06:04:01,381 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 50 for LOIs [2023-04-01 06:04:01,384 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 32 for LOIs [2023-04-01 06:04:01,385 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 68 for LOIs [2023-04-01 06:04:01,461 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 24 for LOIs [2023-04-01 06:04:01,463 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:04:01,465 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:04:01,467 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:04:01,472 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:04:08,351 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21870#(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 06:04:08,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:04:08,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:04:08,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 13 [2023-04-01 06:04:08,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387524502] [2023-04-01 06:04:08,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:04:08,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 06:04:08,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:04:08,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 06:04:08,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=5706, Unknown=0, NotChecked=0, Total=6162 [2023-04-01 06:04:08,355 INFO L87 Difference]: Start difference. First operand 1848 states and 2209 transitions. Second operand has 13 states, 9 states have (on average 11.666666666666666) internal successors, (105), 10 states have internal predecessors, (105), 3 states have call successors, (46), 3 states have call predecessors, (46), 7 states have return successors, (45), 6 states have call predecessors, (45), 3 states have call successors, (45) [2023-04-01 06:04:08,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:04:08,742 INFO L93 Difference]: Finished difference Result 5071 states and 6284 transitions. [2023-04-01 06:04:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 06:04:08,743 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 11.666666666666666) internal successors, (105), 10 states have internal predecessors, (105), 3 states have call successors, (46), 3 states have call predecessors, (46), 7 states have return successors, (45), 6 states have call predecessors, (45), 3 states have call successors, (45) Word has length 203 [2023-04-01 06:04:08,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:04:08,757 INFO L225 Difference]: With dead ends: 5071 [2023-04-01 06:04:08,757 INFO L226 Difference]: Without dead ends: 3273 [2023-04-01 06:04:08,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 524 SyntacticMatches, 18 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3209 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=479, Invalid=6163, Unknown=0, NotChecked=0, Total=6642 [2023-04-01 06:04:08,763 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 89 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:04:08,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1365 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:04:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2023-04-01 06:04:08,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2877. [2023-04-01 06:04:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 1639 states have (on average 1.1964612568639414) internal successors, (1961), 1784 states have internal predecessors, (1961), 619 states have call successors, (619), 588 states have call predecessors, (619), 618 states have return successors, (916), 604 states have call predecessors, (916), 615 states have call successors, (916) [2023-04-01 06:04:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3496 transitions. [2023-04-01 06:04:08,922 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3496 transitions. Word has length 203 [2023-04-01 06:04:08,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:04:08,925 INFO L495 AbstractCegarLoop]: Abstraction has 2877 states and 3496 transitions. [2023-04-01 06:04:08,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 11.666666666666666) internal successors, (105), 10 states have internal predecessors, (105), 3 states have call successors, (46), 3 states have call predecessors, (46), 7 states have return successors, (45), 6 states have call predecessors, (45), 3 states have call successors, (45) [2023-04-01 06:04:08,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3496 transitions. [2023-04-01 06:04:08,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-04-01 06:04:08,929 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:04:08,931 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, 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, 1, 1, 1, 1] [2023-04-01 06:04:08,943 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 06:04:09,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-04-01 06:04:09,141 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:04:09,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:04:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash -689908327, now seen corresponding path program 1 times [2023-04-01 06:04:09,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:04:09,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953565868] [2023-04-01 06:04:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:04:09,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:04:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:04:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 50 proven. 20 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-01 06:04:09,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:04:09,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953565868] [2023-04-01 06:04:09,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953565868] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 06:04:09,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009412890] [2023-04-01 06:04:09,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:04:09,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:04:09,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:04:09,636 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 06:04:09,638 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 06:04:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:04:09,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 46 conjunts are in the unsatisfiable core [2023-04-01 06:04:09,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 06:04:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 100 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 06:04:10,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 06:04:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 62 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-01 06:04:11,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009412890] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 06:04:11,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1531799175] [2023-04-01 06:04:11,310 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2023-04-01 06:04:11,310 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 06:04:11,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 06:04:11,311 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 06:04:11,311 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 06:04:11,406 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 06:04:11,424 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 36 for LOIs [2023-04-01 06:04:11,498 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 36 for LOIs [2023-04-01 06:04:11,525 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 36 for LOIs [2023-04-01 06:04:15,605 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 127 for LOIs [2023-04-01 06:04:15,642 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 64 for LOIs [2023-04-01 06:04:15,964 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 45 for LOIs [2023-04-01 06:04:15,969 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 33 for LOIs [2023-04-01 06:04:16,193 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2023-04-01 06:04:16,297 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 24 for LOIs [2023-04-01 06:04:16,363 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 24 for LOIs [2023-04-01 06:04:16,366 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 36 for LOIs [2023-04-01 06:04:16,400 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 34 for LOIs [2023-04-01 06:04:16,416 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 34 for LOIs [2023-04-01 06:04:16,419 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__lowWaterSensor with input of size 26 for LOIs [2023-04-01 06:04:16,420 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 33 for LOIs [2023-04-01 06:04:16,503 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 33 for LOIs [2023-04-01 06:04:16,506 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 43 for LOIs [2023-04-01 06:04:16,509 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 26 for LOIs [2023-04-01 06:04:16,510 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 26 for LOIs [2023-04-01 06:04:16,512 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 32 for LOIs [2023-04-01 06:04:16,682 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 50 for LOIs [2023-04-01 06:04:16,685 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 32 for LOIs [2023-04-01 06:04:16,686 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 59 for LOIs [2023-04-01 06:04:16,755 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 24 for LOIs [2023-04-01 06:04:16,756 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 28 for LOIs [2023-04-01 06:04:16,758 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 26 for LOIs [2023-04-01 06:04:16,760 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 26 for LOIs [2023-04-01 06:04:16,761 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 06:04:24,788 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34389#(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 06:04:24,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 06:04:24,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 06:04:24,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 15] total 36 [2023-04-01 06:04:24,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760668226] [2023-04-01 06:04:24,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 06:04:24,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-04-01 06:04:24,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:04:24,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-04-01 06:04:24,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=9642, Unknown=0, NotChecked=0, Total=10302 [2023-04-01 06:04:24,794 INFO L87 Difference]: Start difference. First operand 2877 states and 3496 transitions. Second operand has 36 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 12 states have call successors, (60), 5 states have call predecessors, (60), 18 states have return successors, (65), 21 states have call predecessors, (65), 11 states have call successors, (65) [2023-04-01 06:04:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:04:27,055 INFO L93 Difference]: Finished difference Result 5256 states and 6639 transitions. [2023-04-01 06:04:27,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-04-01 06:04:27,056 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 12 states have call successors, (60), 5 states have call predecessors, (60), 18 states have return successors, (65), 21 states have call predecessors, (65), 11 states have call successors, (65) Word has length 208 [2023-04-01 06:04:27,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:04:27,057 INFO L225 Difference]: With dead ends: 5256 [2023-04-01 06:04:27,057 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 06:04:27,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 539 SyntacticMatches, 21 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8658 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=1250, Invalid=17932, Unknown=0, NotChecked=0, Total=19182 [2023-04-01 06:04:27,073 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 520 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 3381 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 3381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:04:27,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1033 Invalid, 3801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 3381 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 06:04:27,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 06:04:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 06:04:27,074 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 06:04:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 06:04:27,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 208 [2023-04-01 06:04:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:04:27,075 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 06:04:27,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 12 states have call successors, (60), 5 states have call predecessors, (60), 18 states have return successors, (65), 21 states have call predecessors, (65), 11 states have call successors, (65) [2023-04-01 06:04:27,075 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 06:04:27,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 06:04:27,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 06:04:27,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 06:04:27,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 06:04:27,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.