/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:53:21,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:53:21,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:53:21,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:53:21,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:53:21,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:53:21,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:53:21,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:53:21,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:53:21,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:53:21,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:53:21,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:53:21,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:53:21,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:53:21,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:53:21,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:53:21,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:53:21,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:53:21,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:53:21,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:53:21,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:53:21,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:53:21,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:53:21,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:53:21,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:53:21,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:53:21,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:53:21,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:53:21,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:53:21,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:53:21,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:53:21,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:53:21,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:53:21,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:53:21,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:53:21,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:53:21,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:53:21,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:53:21,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:53:21,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:53:21,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:53:21,392 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 23:53:21,426 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:53:21,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:53:21,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:53:21,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:53:21,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:53:21,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:53:21,428 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:53:21,428 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:53:21,428 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:53:21,428 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:53:21,428 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:53:21,428 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:53:21,429 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:53:21,429 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:53:21,429 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:53:21,429 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:53:21,429 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:53:21,429 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:53:21,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:53:21,430 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:53:21,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:53:21,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:53:21,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:53:21,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:53:21,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:53:21,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:53:21,431 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:53:21,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:53:21,432 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:53:21,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:53:21,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:53:21,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:53:21,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:53:21,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:53:21,433 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:53:21,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:53:21,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:53:21,433 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:53:21,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:53:21,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:53:21,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:53:21,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:53:21,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:53:21,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:53:21,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:53:21,679 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:53:21,680 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:53:21,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c [2023-03-31 23:53:22,912 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:53:23,186 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:53:23,187 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c [2023-03-31 23:53:23,197 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0e4deb62/79352526b1ba43b7bc7cfc9b710a1ae3/FLAGd606c452b [2023-03-31 23:53:23,222 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0e4deb62/79352526b1ba43b7bc7cfc9b710a1ae3 [2023-03-31 23:53:23,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:53:23,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:53:23,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:53:23,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:53:23,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:53:23,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:53:23" (1/1) ... [2023-03-31 23:53:23,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0562f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23, skipping insertion in model container [2023-03-31 23:53:23,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:53:23" (1/1) ... [2023-03-31 23:53:23,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:53:23,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:53:23,443 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_spec2_product34.cil.c[4389,4402] [2023-03-31 23:53:23,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:53:23,520 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:53:23,538 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_spec2_product34.cil.c[4389,4402] [2023-03-31 23:53:23,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:53:23,627 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:53:23,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23 WrapperNode [2023-03-31 23:53:23,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:53:23,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:53:23,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:53:23,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:53:23,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23" (1/1) ... [2023-03-31 23:53:23,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23" (1/1) ... [2023-03-31 23:53:23,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23" (1/1) ... [2023-03-31 23:53:23,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23" (1/1) ... [2023-03-31 23:53:23,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23" (1/1) ... [2023-03-31 23:53:23,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23" (1/1) ... [2023-03-31 23:53:23,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23" (1/1) ... [2023-03-31 23:53:23,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23" (1/1) ... [2023-03-31 23:53:23,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:53:23,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:53:23,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:53:23,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:53:23,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23" (1/1) ... [2023-03-31 23:53:23,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:53:23,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:53:23,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 23:53:23,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 23:53:23,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:53:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:53:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:53:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:53:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:53:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:53:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:53:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:53:23,769 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:53:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 23:53:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 23:53:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 23:53:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 23:53:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 23:53:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 23:53:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-03-31 23:53:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:53:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2023-03-31 23:53:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2023-03-31 23:53:23,770 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:53:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:53:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:53:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:53:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:53:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:53:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:53:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:53:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:53:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:53:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:53:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:53:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-03-31 23:53:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 23:53:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 23:53:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 23:53:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 23:53:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 23:53:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 23:53:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-03-31 23:53:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-03-31 23:53:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:53:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:53:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:53:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:53:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:53:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:53:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:53:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:53:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 23:53:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 23:53:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 23:53:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:53:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:53:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2023-03-31 23:53:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:53:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:53:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:53:23,774 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:53:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:53:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:53:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 23:53:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 23:53:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 23:53:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 23:53:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-03-31 23:53:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:53:23,775 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 23:53:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2023-03-31 23:53:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:53:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:53:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:53:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:53:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:53:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:53:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:53:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:53:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:53:23,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:53:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:53:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:53:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:53:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:53:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:53:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:53:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-03-31 23:53:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 23:53:23,777 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 23:53:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 23:53:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-03-31 23:53:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-03-31 23:53:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 23:53:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:53:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:53:23,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:53:23,929 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:53:23,931 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:53:24,504 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:53:24,696 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:53:24,696 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 23:53:24,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:53:24 BoogieIcfgContainer [2023-03-31 23:53:24,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:53:24,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:53:24,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:53:24,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:53:24,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:53:23" (1/3) ... [2023-03-31 23:53:24,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438b50b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:53:24, skipping insertion in model container [2023-03-31 23:53:24,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:53:23" (2/3) ... [2023-03-31 23:53:24,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438b50b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:53:24, skipping insertion in model container [2023-03-31 23:53:24,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:53:24" (3/3) ... [2023-03-31 23:53:24,708 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2023-03-31 23:53:24,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:53:24,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:53:24,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:53:24,786 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;@34773ce3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:53:24,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:53:24,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 59 states have (on average 1.271186440677966) internal successors, (75), 70 states have internal predecessors, (75), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-03-31 23:53:24,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-03-31 23:53:24,804 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:53:24,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:53:24,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:53:24,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:53:24,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1907093487, now seen corresponding path program 1 times [2023-03-31 23:53:24,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:53:24,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150986198] [2023-03-31 23:53:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:53:24,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:53:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:53:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:53:25,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:53:25,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150986198] [2023-03-31 23:53:25,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150986198] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:53:25,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:53:25,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 23:53:25,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392637921] [2023-03-31 23:53:25,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:53:25,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 23:53:25,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:53:25,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 23:53:25,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:53:25,086 INFO L87 Difference]: Start difference. First operand has 131 states, 59 states have (on average 1.271186440677966) internal successors, (75), 70 states have internal predecessors, (75), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:53:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:53:25,149 INFO L93 Difference]: Finished difference Result 188 states and 227 transitions. [2023-03-31 23:53:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 23:53:25,152 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2023-03-31 23:53:25,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:53:25,160 INFO L225 Difference]: With dead ends: 188 [2023-03-31 23:53:25,160 INFO L226 Difference]: Without dead ends: 96 [2023-03-31 23:53:25,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:53:25,167 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:53:25,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:53:25,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-03-31 23:53:25,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-03-31 23:53:25,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 57 states have internal predecessors, (60), 27 states have call successors, (27), 24 states have call predecessors, (27), 19 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-03-31 23:53:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2023-03-31 23:53:25,209 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 46 [2023-03-31 23:53:25,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:53:25,210 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2023-03-31 23:53:25,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:53:25,210 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2023-03-31 23:53:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-03-31 23:53:25,213 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:53:25,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:53:25,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:53:25,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:53:25,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:53:25,215 INFO L85 PathProgramCache]: Analyzing trace with hash -590933817, now seen corresponding path program 1 times [2023-03-31 23:53:25,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:53:25,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446141854] [2023-03-31 23:53:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:53:25,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:53:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:53:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:53:25,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:53:25,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446141854] [2023-03-31 23:53:25,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446141854] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:53:25,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:53:25,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:53:25,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565232806] [2023-03-31 23:53:25,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:53:25,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:53:25,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:53:25,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:53:25,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:53:25,353 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:53:25,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:53:25,410 INFO L93 Difference]: Finished difference Result 142 states and 161 transitions. [2023-03-31 23:53:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:53:25,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2023-03-31 23:53:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:53:25,413 INFO L225 Difference]: With dead ends: 142 [2023-03-31 23:53:25,413 INFO L226 Difference]: Without dead ends: 88 [2023-03-31 23:53:25,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:53:25,415 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 9 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:53:25,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 155 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:53:25,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-03-31 23:53:25,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-03-31 23:53:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 52 states have internal predecessors, (54), 24 states have call successors, (24), 23 states have call predecessors, (24), 19 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-03-31 23:53:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2023-03-31 23:53:25,431 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 47 [2023-03-31 23:53:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:53:25,432 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2023-03-31 23:53:25,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:53:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2023-03-31 23:53:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-03-31 23:53:25,436 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:53:25,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:53:25,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:53:25,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:53:25,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:53:25,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1343676122, now seen corresponding path program 1 times [2023-03-31 23:53:25,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:53:25,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513572315] [2023-03-31 23:53:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:53:25,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:53:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:53:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:53:25,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:53:25,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513572315] [2023-03-31 23:53:25,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513572315] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:53:25,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:53:25,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:53:25,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584179085] [2023-03-31 23:53:25,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:53:25,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:53:25,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:53:25,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:53:25,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:53:25,782 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:53:26,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:53:26,033 INFO L93 Difference]: Finished difference Result 151 states and 172 transitions. [2023-03-31 23:53:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:53:26,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 50 [2023-03-31 23:53:26,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:53:26,036 INFO L225 Difference]: With dead ends: 151 [2023-03-31 23:53:26,036 INFO L226 Difference]: Without dead ends: 88 [2023-03-31 23:53:26,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-03-31 23:53:26,038 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 87 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:53:26,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 232 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:53:26,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-03-31 23:53:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-03-31 23:53:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 51 states have internal predecessors, (53), 24 states have call successors, (24), 23 states have call predecessors, (24), 19 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-03-31 23:53:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2023-03-31 23:53:26,068 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 50 [2023-03-31 23:53:26,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:53:26,069 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2023-03-31 23:53:26,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:53:26,069 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2023-03-31 23:53:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-03-31 23:53:26,070 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:53:26,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:53:26,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:53:26,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:53:26,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:53:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash 380805785, now seen corresponding path program 1 times [2023-03-31 23:53:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:53:26,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434350631] [2023-03-31 23:53:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:53:26,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:53:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:53:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:53:26,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:53:26,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434350631] [2023-03-31 23:53:26,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434350631] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:53:26,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:53:26,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 23:53:26,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218032575] [2023-03-31 23:53:26,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:53:26,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 23:53:26,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:53:26,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 23:53:26,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 23:53:26,222 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-03-31 23:53:26,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:53:26,476 INFO L93 Difference]: Finished difference Result 230 states and 271 transitions. [2023-03-31 23:53:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:53:26,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 58 [2023-03-31 23:53:26,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:53:26,479 INFO L225 Difference]: With dead ends: 230 [2023-03-31 23:53:26,479 INFO L226 Difference]: Without dead ends: 167 [2023-03-31 23:53:26,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:53:26,481 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 120 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:53:26,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 118 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:53:26,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-03-31 23:53:26,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 150. [2023-03-31 23:53:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 89 states have internal predecessors, (98), 35 states have call successors, (35), 35 states have call predecessors, (35), 33 states have return successors, (35), 32 states have call predecessors, (35), 31 states have call successors, (35) [2023-03-31 23:53:26,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 168 transitions. [2023-03-31 23:53:26,504 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 168 transitions. Word has length 58 [2023-03-31 23:53:26,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:53:26,504 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 168 transitions. [2023-03-31 23:53:26,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-03-31 23:53:26,504 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 168 transitions. [2023-03-31 23:53:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 23:53:26,506 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:53:26,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:53:26,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 23:53:26,506 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:53:26,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:53:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1436417118, now seen corresponding path program 1 times [2023-03-31 23:53:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:53:26,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928646398] [2023-03-31 23:53:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:53:26,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:53:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:53:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:53:26,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:53:26,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928646398] [2023-03-31 23:53:26,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928646398] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:53:26,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:53:26,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:53:26,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146011488] [2023-03-31 23:53:26,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:53:26,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:53:26,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:53:26,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:53:26,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:53:26,668 INFO L87 Difference]: Start difference. First operand 150 states and 168 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 23:53:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:53:26,793 INFO L93 Difference]: Finished difference Result 383 states and 442 transitions. [2023-03-31 23:53:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 23:53:26,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 67 [2023-03-31 23:53:26,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:53:26,797 INFO L225 Difference]: With dead ends: 383 [2023-03-31 23:53:26,797 INFO L226 Difference]: Without dead ends: 258 [2023-03-31 23:53:26,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:53:26,799 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 57 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:53:26,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 343 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:53:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-03-31 23:53:26,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 248. [2023-03-31 23:53:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 150 states have internal predecessors, (162), 55 states have call successors, (55), 55 states have call predecessors, (55), 55 states have return successors, (59), 53 states have call predecessors, (59), 51 states have call successors, (59) [2023-03-31 23:53:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 276 transitions. [2023-03-31 23:53:26,830 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 276 transitions. Word has length 67 [2023-03-31 23:53:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:53:26,830 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 276 transitions. [2023-03-31 23:53:26,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-03-31 23:53:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 276 transitions. [2023-03-31 23:53:26,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-03-31 23:53:26,832 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:53:26,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:53:26,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 23:53:26,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:53:26,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:53:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1726682245, now seen corresponding path program 1 times [2023-03-31 23:53:26,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:53:26,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683119470] [2023-03-31 23:53:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:53:26,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:53:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:53:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:53:26,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:53:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683119470] [2023-03-31 23:53:26,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683119470] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:53:26,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:53:26,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:53:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32208585] [2023-03-31 23:53:26,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:53:26,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:53:26,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:53:26,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:53:26,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:53:26,937 INFO L87 Difference]: Start difference. First operand 248 states and 276 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-03-31 23:53:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:53:27,024 INFO L93 Difference]: Finished difference Result 373 states and 435 transitions. [2023-03-31 23:53:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:53:27,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2023-03-31 23:53:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:53:27,030 INFO L225 Difference]: With dead ends: 373 [2023-03-31 23:53:27,030 INFO L226 Difference]: Without dead ends: 370 [2023-03-31 23:53:27,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:53:27,035 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 67 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:53:27,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 140 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:53:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-03-31 23:53:27,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2023-03-31 23:53:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 207 states have (on average 1.1884057971014492) internal successors, (246), 227 states have internal predecessors, (246), 80 states have call successors, (80), 80 states have call predecessors, (80), 82 states have return successors, (104), 79 states have call predecessors, (104), 76 states have call successors, (104) [2023-03-31 23:53:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 430 transitions. [2023-03-31 23:53:27,096 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 430 transitions. Word has length 70 [2023-03-31 23:53:27,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:53:27,098 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 430 transitions. [2023-03-31 23:53:27,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-03-31 23:53:27,101 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 430 transitions. [2023-03-31 23:53:27,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-03-31 23:53:27,105 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:53:27,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:53:27,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 23:53:27,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:53:27,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:53:27,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1594114555, now seen corresponding path program 1 times [2023-03-31 23:53:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:53:27,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119987484] [2023-03-31 23:53:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:53:27,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:53:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:53:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 23:53:27,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:53:27,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119987484] [2023-03-31 23:53:27,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119987484] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:53:27,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946031528] [2023-03-31 23:53:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:53:27,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:53:27,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:53:27,647 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) [2023-03-31 23:53:27,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:53:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:53:27,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 33 conjunts are in the unsatisfiable core [2023-03-31 23:53:27,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:53:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:53:28,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:53:28,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946031528] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:53:28,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:53:28,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2023-03-31 23:53:28,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580935300] [2023-03-31 23:53:28,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:53:28,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 23:53:28,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:53:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 23:53:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-03-31 23:53:28,221 INFO L87 Difference]: Start difference. First operand 370 states and 430 transitions. Second operand has 14 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 6 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2023-03-31 23:53:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:53:29,360 INFO L93 Difference]: Finished difference Result 921 states and 1130 transitions. [2023-03-31 23:53:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-03-31 23:53:29,361 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 6 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) Word has length 108 [2023-03-31 23:53:29,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:53:29,366 INFO L225 Difference]: With dead ends: 921 [2023-03-31 23:53:29,366 INFO L226 Difference]: Without dead ends: 576 [2023-03-31 23:53:29,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=1732, Unknown=0, NotChecked=0, Total=1980 [2023-03-31 23:53:29,371 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 176 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 23:53:29,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 320 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 23:53:29,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-03-31 23:53:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 532. [2023-03-31 23:53:29,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 307 states have (on average 1.1856677524429968) internal successors, (364), 334 states have internal predecessors, (364), 117 states have call successors, (117), 117 states have call predecessors, (117), 107 states have return successors, (150), 107 states have call predecessors, (150), 113 states have call successors, (150) [2023-03-31 23:53:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 631 transitions. [2023-03-31 23:53:29,438 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 631 transitions. Word has length 108 [2023-03-31 23:53:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:53:29,438 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 631 transitions. [2023-03-31 23:53:29,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 6 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2023-03-31 23:53:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 631 transitions. [2023-03-31 23:53:29,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-03-31 23:53:29,446 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:53:29,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:53:29,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 23:53:29,652 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 [2023-03-31 23:53:29,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:53:29,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:53:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash 415119411, now seen corresponding path program 1 times [2023-03-31 23:53:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:53:29,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025662255] [2023-03-31 23:53:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:53:29,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:53:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:53:29,675 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 23:53:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:53:29,728 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 23:53:29,728 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 23:53:29,729 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:53:29,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 23:53:29,734 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:53:29,737 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:53:29,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:53:29 BoogieIcfgContainer [2023-03-31 23:53:29,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:53:29,830 INFO L158 Benchmark]: Toolchain (without parser) took 6605.46ms. Allocated memory was 302.0MB in the beginning and 362.8MB in the end (delta: 60.8MB). Free memory was 252.7MB in the beginning and 194.1MB in the end (delta: 58.6MB). Peak memory consumption was 119.4MB. Max. memory is 8.0GB. [2023-03-31 23:53:29,831 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory was 131.6MB in the beginning and 131.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:53:29,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.13ms. Allocated memory is still 302.0MB. Free memory was 252.2MB in the beginning and 234.3MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-03-31 23:53:29,831 INFO L158 Benchmark]: Boogie Preprocessor took 71.17ms. Allocated memory is still 302.0MB. Free memory was 234.3MB in the beginning and 230.7MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-03-31 23:53:29,831 INFO L158 Benchmark]: RCFGBuilder took 997.19ms. Allocated memory is still 302.0MB. Free memory was 230.7MB in the beginning and 251.8MB in the end (delta: -21.1MB). Peak memory consumption was 50.7MB. Max. memory is 8.0GB. [2023-03-31 23:53:29,832 INFO L158 Benchmark]: TraceAbstraction took 5127.32ms. Allocated memory was 302.0MB in the beginning and 362.8MB in the end (delta: 60.8MB). Free memory was 251.2MB in the beginning and 194.1MB in the end (delta: 57.2MB). Peak memory consumption was 118.0MB. Max. memory is 8.0GB. [2023-03-31 23:53:29,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory was 131.6MB in the beginning and 131.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 402.13ms. Allocated memory is still 302.0MB. Free memory was 252.2MB in the beginning and 234.3MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 71.17ms. Allocated memory is still 302.0MB. Free memory was 234.3MB in the beginning and 230.7MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 997.19ms. Allocated memory is still 302.0MB. Free memory was 230.7MB in the beginning and 251.8MB in the end (delta: -21.1MB). Peak memory consumption was 50.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5127.32ms. Allocated memory was 302.0MB in the beginning and 362.8MB in the end (delta: 60.8MB). Free memory was 251.2MB in the beginning and 194.1MB in the end (delta: 57.2MB). Peak memory consumption was 118.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 259]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L161] int waterLevel = 1; [L162] int methaneLevelCritical = 0; [L265] int methAndRunningLastTime ; [L508] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L775] int pumpRunning = 0; [L776] int systemActive = 1; [L133] int retValue_acc ; [L134] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L138] FCALL select_helpers() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L139] FCALL select_features() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L140] CALL, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L330] int retValue_acc ; [L333] retValue_acc = 1 [L334] return (retValue_acc); [L140] RET, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L140] tmp = valid_product() [L142] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L144] FCALL setup() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L145] CALL runTest() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] CALL __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L270] methAndRunningLastTime = 0 [L123] RET __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L124] CALL test() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L707] int splverifierCounter ; [L708] int tmp ; [L709] int tmp___0 ; [L710] int tmp___1 ; [L711] int tmp___2 ; [L714] splverifierCounter = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L716] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L718] COND TRUE splverifierCounter < 4 [L724] tmp = __VERIFIER_nondet_int() [L726] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L728] CALL waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L179] COND TRUE waterLevel < 2 [L180] waterLevel = waterLevel + 1 [L728] RET waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L734] tmp___0 = __VERIFIER_nondet_int() [L736] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L738] CALL changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] COND FALSE !(\read(methaneLevelCritical)) [L194] methaneLevelCritical = 1 [L738] RET changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L744] tmp___2 = __VERIFIER_nondet_int() [L746] COND FALSE !(\read(tmp___2)) [L752] tmp___1 = __VERIFIER_nondet_int() [L754] COND FALSE !(\read(tmp___1)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L761] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L782] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L789] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L791] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L811] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L814] COND TRUE ! pumpRunning VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L816] CALL, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L908] int retValue_acc ; [L909] int tmp ; [L910] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L914] CALL, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L241] int retValue_acc ; [L244] COND FALSE !(waterLevel < 2) [L248] retValue_acc = 0 [L249] return (retValue_acc); [L914] RET, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L914] tmp = isHighWaterSensorDry() [L916] COND FALSE !(\read(tmp)) [L919] tmp___0 = 1 [L921] retValue_acc = tmp___0 [L922] return (retValue_acc); [L816] RET, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L816] tmp = isHighWaterLevel() [L818] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L820] CALL activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L839] pumpRunning = 1 [L820] RET activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L791] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L797] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L275] int tmp ; [L276] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L280] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L200] int retValue_acc ; [L203] retValue_acc = methaneLevelCritical [L204] return (retValue_acc); [L280] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L280] tmp = isMethaneLevelCritical() [L282] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L284] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L284] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L284] tmp___0 = isPumpRunning() [L286] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L287] COND FALSE !(\read(methAndRunningLastTime)) [L292] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L797] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L761] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L716] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L718] COND TRUE splverifierCounter < 4 [L724] tmp = __VERIFIER_nondet_int() [L726] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L734] tmp___0 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L744] tmp___2 = __VERIFIER_nondet_int() [L746] COND FALSE !(\read(tmp___2)) [L752] tmp___1 = __VERIFIER_nondet_int() [L754] COND FALSE !(\read(tmp___1)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L761] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L782] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L784] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L167] COND TRUE waterLevel > 0 [L168] waterLevel = waterLevel - 1 [L784] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L789] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L791] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L811] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L814] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L829] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L791] RET processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L797] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L275] int tmp ; [L276] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L280] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L200] int retValue_acc ; [L203] retValue_acc = methaneLevelCritical [L204] return (retValue_acc); [L280] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L280] tmp = isMethaneLevelCritical() [L282] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L284] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L284] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L284] tmp___0 = isPumpRunning() [L286] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L287] COND TRUE \read(methAndRunningLastTime) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L289] CALL __automaton_fail() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L259] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 176 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 543 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 516 mSDsluCounter, 1412 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 878 mSDsCounter, 195 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1894 IncrementalHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 195 mSolverCounterUnsat, 534 mSDtfsCounter, 1894 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=532occurred in iteration=7, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 71 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 665 NumberOfCodeBlocks, 665 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 546 ConstructedInterpolants, 0 QuantifiedInterpolants, 1131 SizeOfPredicates, 10 NumberOfNonLiveVariables, 457 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 54/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-03-31 23:53:29,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...