/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_spec3_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:54:35,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:54:35,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:54:35,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:54:35,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:54:35,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:54:35,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:54:35,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:54:35,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:54:35,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:54:35,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:54:35,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:54:35,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:54:35,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:54:35,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:54:35,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:54:35,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:54:35,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:54:35,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:54:35,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:54:35,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:54:35,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:54:35,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:54:35,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:54:35,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:54:35,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:54:35,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:54:35,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:54:35,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:54:35,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:54:35,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:54:35,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:54:35,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:54:35,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:54:35,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:54:35,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:54:35,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:54:35,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:54:35,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:54:35,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:54:35,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:54:35,476 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 23:54:35,492 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:54:35,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:54:35,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:54:35,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:54:35,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:54:35,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:54:35,494 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:54:35,494 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:54:35,495 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:54:35,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:54:35,495 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:54:35,495 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:54:35,495 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:54:35,496 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:54:35,496 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:54:35,496 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:54:35,496 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:54:35,496 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:54:35,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:54:35,497 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:54:35,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:54:35,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:54:35,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:54:35,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:54:35,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:54:35,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:54:35,498 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:54:35,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:54:35,498 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:54:35,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:54:35,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:54:35,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:54:35,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:54:35,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:54:35,499 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:54:35,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:54:35,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:54:35,499 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:54:35,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:54:35,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:54:35,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:54:35,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:54:35,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:54:35,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:54:35,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:54:35,701 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:54:35,701 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:54:35,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product14.cil.c [2023-03-31 23:54:36,847 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:54:37,069 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:54:37,069 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product14.cil.c [2023-03-31 23:54:37,082 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de718085e/07efe7c9b871438dad30717a439e95c3/FLAGdd81d051c [2023-03-31 23:54:37,094 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de718085e/07efe7c9b871438dad30717a439e95c3 [2023-03-31 23:54:37,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:54:37,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:54:37,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:54:37,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:54:37,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:54:37,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:54:37" (1/1) ... [2023-03-31 23:54:37,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629534c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37, skipping insertion in model container [2023-03-31 23:54:37,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:54:37" (1/1) ... [2023-03-31 23:54:37,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:54:37,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:54:37,325 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_spec3_product14.cil.c[1605,1618] [2023-03-31 23:54:37,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:54:37,488 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:54:37,499 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_spec3_product14.cil.c[1605,1618] [2023-03-31 23:54:37,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:54:37,583 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:54:37,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37 WrapperNode [2023-03-31 23:54:37,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:54:37,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:54:37,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:54:37,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:54:37,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37" (1/1) ... [2023-03-31 23:54:37,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37" (1/1) ... [2023-03-31 23:54:37,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37" (1/1) ... [2023-03-31 23:54:37,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37" (1/1) ... [2023-03-31 23:54:37,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37" (1/1) ... [2023-03-31 23:54:37,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37" (1/1) ... [2023-03-31 23:54:37,645 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37" (1/1) ... [2023-03-31 23:54:37,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37" (1/1) ... [2023-03-31 23:54:37,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:54:37,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:54:37,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:54:37,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:54:37,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37" (1/1) ... [2023-03-31 23:54:37,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:54:37,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:54:37,688 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 23:54:37,695 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 23:54:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:54:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:54:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:54:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:54:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:54:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:54:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:54:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:54:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:54:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-03-31 23:54:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:54:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-03-31 23:54:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 23:54:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2023-03-31 23:54:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 23:54:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 23:54:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 23:54:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 23:54:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 23:54:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-03-31 23:54:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:54:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:54:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:54:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:54:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:54:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:54:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:54:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:54:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:54:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:54:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:54:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:54:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 23:54:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 23:54:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 23:54:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 23:54:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 23:54:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 23:54:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:54:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:54:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:54:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:54:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:54:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:54:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:54:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:54:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:54:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:54:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:54:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 23:54:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 23:54:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 23:54:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-03-31 23:54:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 23:54:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 23:54:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:54:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 23:54:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 23:54:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 23:54:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-03-31 23:54:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 23:54:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-03-31 23:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 23:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2023-03-31 23:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 23:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 23:54:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:54:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:54:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:54:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:54:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:54:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:54:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:54:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:54:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:54:37,915 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:54:37,917 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:54:38,422 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:54:38,542 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:54:38,543 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 23:54:38,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:54:38 BoogieIcfgContainer [2023-03-31 23:54:38,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:54:38,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:54:38,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:54:38,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:54:38,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:54:37" (1/3) ... [2023-03-31 23:54:38,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3b1a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:54:38, skipping insertion in model container [2023-03-31 23:54:38,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:37" (2/3) ... [2023-03-31 23:54:38,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3b1a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:54:38, skipping insertion in model container [2023-03-31 23:54:38,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:54:38" (3/3) ... [2023-03-31 23:54:38,555 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product14.cil.c [2023-03-31 23:54:38,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:54:38,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:54:38,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:54:38,632 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;@3493b831, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:54:38,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:54:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 74 states have internal predecessors, (79), 43 states have call successors, (43), 26 states have call predecessors, (43), 26 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2023-03-31 23:54:38,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-03-31 23:54:38,648 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:54:38,649 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 23:54:38,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:54:38,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:54:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1501987440, now seen corresponding path program 1 times [2023-03-31 23:54:38,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:54:38,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756100705] [2023-03-31 23:54:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:54:38,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:54:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:54:38,876 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 23:54:38,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:54:38,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756100705] [2023-03-31 23:54:38,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756100705] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:54:38,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:54:38,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 23:54:38,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15138739] [2023-03-31 23:54:38,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:54:38,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 23:54:38,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:54:38,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 23:54:38,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:54:38,920 INFO L87 Difference]: Start difference. First operand has 135 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 74 states have internal predecessors, (79), 43 states have call successors, (43), 26 states have call predecessors, (43), 26 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (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 23:54:39,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:54:39,003 INFO L93 Difference]: Finished difference Result 189 states and 230 transitions. [2023-03-31 23:54:39,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 23:54:39,007 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (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 23:54:39,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:54:39,017 INFO L225 Difference]: With dead ends: 189 [2023-03-31 23:54:39,017 INFO L226 Difference]: Without dead ends: 95 [2023-03-31 23:54:39,021 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 23:54:39,024 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:54:39,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:54:39,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-03-31 23:54:39,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-03-31 23:54:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 57 states have internal predecessors, (60), 27 states have call successors, (27), 23 states have call predecessors, (27), 18 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-03-31 23:54:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2023-03-31 23:54:39,061 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 47 [2023-03-31 23:54:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:54:39,062 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2023-03-31 23:54:39,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (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 23:54:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2023-03-31 23:54:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-03-31 23:54:39,065 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:54:39,065 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] [2023-03-31 23:54:39,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:54:39,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:54:39,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:54:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash -917892721, now seen corresponding path program 1 times [2023-03-31 23:54:39,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:54:39,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981477790] [2023-03-31 23:54:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:54:39,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:54:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:54:39,191 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 23:54:39,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:54:39,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981477790] [2023-03-31 23:54:39,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981477790] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:54:39,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:54:39,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:54:39,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543399266] [2023-03-31 23:54:39,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:54:39,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:54:39,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:54:39,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:54:39,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:54:39,195 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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 23:54:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:54:39,254 INFO L93 Difference]: Finished difference Result 143 states and 164 transitions. [2023-03-31 23:54:39,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:54:39,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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 48 [2023-03-31 23:54:39,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:54:39,258 INFO L225 Difference]: With dead ends: 143 [2023-03-31 23:54:39,258 INFO L226 Difference]: Without dead ends: 87 [2023-03-31 23:54:39,259 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 23:54:39,260 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:54:39,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 157 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:54:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-03-31 23:54:39,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-03-31 23:54:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 52 states have internal predecessors, (54), 24 states have call successors, (24), 22 states have call predecessors, (24), 18 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-03-31 23:54:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2023-03-31 23:54:39,278 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 48 [2023-03-31 23:54:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:54:39,279 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2023-03-31 23:54:39,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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 23:54:39,281 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2023-03-31 23:54:39,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-03-31 23:54:39,290 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:54:39,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:54:39,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:54:39,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:54:39,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:54:39,291 INFO L85 PathProgramCache]: Analyzing trace with hash 493492804, now seen corresponding path program 1 times [2023-03-31 23:54:39,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:54:39,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21343378] [2023-03-31 23:54:39,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:54:39,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:54:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:54:39,577 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 23:54:39,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:54:39,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21343378] [2023-03-31 23:54:39,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21343378] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:54:39,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:54:39,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:54:39,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355186150] [2023-03-31 23:54:39,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:54:39,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:54:39,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:54:39,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:54:39,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:54:39,580 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (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 23:54:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:54:39,731 INFO L93 Difference]: Finished difference Result 152 states and 175 transitions. [2023-03-31 23:54:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:54:39,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (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 51 [2023-03-31 23:54:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:54:39,733 INFO L225 Difference]: With dead ends: 152 [2023-03-31 23:54:39,733 INFO L226 Difference]: Without dead ends: 87 [2023-03-31 23:54:39,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-03-31 23:54:39,735 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 127 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:54:39,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 235 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:54:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-03-31 23:54:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-03-31 23:54:39,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 51 states have internal predecessors, (53), 24 states have call successors, (24), 22 states have call predecessors, (24), 18 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-03-31 23:54:39,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2023-03-31 23:54:39,746 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 51 [2023-03-31 23:54:39,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:54:39,746 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2023-03-31 23:54:39,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (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 23:54:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2023-03-31 23:54:39,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 23:54:39,748 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:54:39,748 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] [2023-03-31 23:54:39,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:54:39,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:54:39,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:54:39,749 INFO L85 PathProgramCache]: Analyzing trace with hash 687372753, now seen corresponding path program 1 times [2023-03-31 23:54:39,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:54:39,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279731387] [2023-03-31 23:54:39,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:54:39,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:54:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:54:39,921 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 23:54:39,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:54:39,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279731387] [2023-03-31 23:54:39,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279731387] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:54:39,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:54:39,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:54:39,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671457588] [2023-03-31 23:54:39,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:54:39,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:54:39,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:54:39,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:54:39,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:54:39,925 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 23:54:40,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:54:40,081 INFO L93 Difference]: Finished difference Result 209 states and 244 transitions. [2023-03-31 23:54:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 23:54:40,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 59 [2023-03-31 23:54:40,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:54:40,088 INFO L225 Difference]: With dead ends: 209 [2023-03-31 23:54:40,089 INFO L226 Difference]: Without dead ends: 144 [2023-03-31 23:54:40,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:54:40,098 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 55 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:54:40,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 358 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:54:40,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-03-31 23:54:40,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2023-03-31 23:54:40,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 84 states have internal predecessors, (89), 36 states have call successors, (36), 32 states have call predecessors, (36), 28 states have return successors, (33), 28 states have call predecessors, (33), 32 states have call successors, (33) [2023-03-31 23:54:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2023-03-31 23:54:40,132 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 59 [2023-03-31 23:54:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:54:40,133 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2023-03-31 23:54:40,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-03-31 23:54:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2023-03-31 23:54:40,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-03-31 23:54:40,136 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:54:40,136 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] [2023-03-31 23:54:40,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 23:54:40,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:54:40,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:54:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash 857382897, now seen corresponding path program 1 times [2023-03-31 23:54:40,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:54:40,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397251936] [2023-03-31 23:54:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:54:40,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:54:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:54:40,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 23:54:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:54:40,220 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 23:54:40,221 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 23:54:40,222 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:54:40,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 23:54:40,227 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-03-31 23:54:40,230 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:54:40,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:54:40 BoogieIcfgContainer [2023-03-31 23:54:40,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:54:40,293 INFO L158 Benchmark]: Toolchain (without parser) took 3195.15ms. Allocated memory is still 275.8MB. Free memory was 224.4MB in the beginning and 139.5MB in the end (delta: 84.9MB). Peak memory consumption was 85.2MB. Max. memory is 8.0GB. [2023-03-31 23:54:40,293 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 140.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:54:40,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.03ms. Allocated memory is still 275.8MB. Free memory was 224.1MB in the beginning and 206.2MB in the end (delta: 18.0MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-03-31 23:54:40,293 INFO L158 Benchmark]: Boogie Preprocessor took 68.13ms. Allocated memory is still 275.8MB. Free memory was 206.2MB in the beginning and 202.9MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-03-31 23:54:40,294 INFO L158 Benchmark]: RCFGBuilder took 891.96ms. Allocated memory is still 275.8MB. Free memory was 202.7MB in the beginning and 203.0MB in the end (delta: -245.0kB). Peak memory consumption was 27.0MB. Max. memory is 8.0GB. [2023-03-31 23:54:40,294 INFO L158 Benchmark]: TraceAbstraction took 1742.89ms. Allocated memory is still 275.8MB. Free memory was 202.5MB in the beginning and 139.5MB in the end (delta: 62.9MB). Peak memory consumption was 62.4MB. Max. memory is 8.0GB. [2023-03-31 23:54:40,295 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 191.9MB. Free memory is still 140.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 485.03ms. Allocated memory is still 275.8MB. Free memory was 224.1MB in the beginning and 206.2MB in the end (delta: 18.0MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 68.13ms. Allocated memory is still 275.8MB. Free memory was 206.2MB in the beginning and 202.9MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 891.96ms. Allocated memory is still 275.8MB. Free memory was 202.7MB in the beginning and 203.0MB in the end (delta: -245.0kB). Peak memory consumption was 27.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1742.89ms. Allocated memory is still 275.8MB. Free memory was 202.5MB in the beginning and 139.5MB in the end (delta: 62.9MB). Peak memory consumption was 62.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L141] int pumpRunning = 0; [L142] int systemActive = 1; [L468] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L735] int cleanupTimeShifts = 4; [L831] int waterLevel = 1; [L832] int methaneLevelCritical = 0; [L808] int retValue_acc ; [L809] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L813] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L814] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L815] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L88] int retValue_acc ; [L91] retValue_acc = 1 [L92] return (retValue_acc); [L815] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L815] tmp = valid_product() [L817] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L819] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L820] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L802] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L669] int splverifierCounter ; [L670] int tmp ; [L671] int tmp___0 ; [L672] int tmp___1 ; [L673] int tmp___2 ; [L676] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L678] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L680] COND TRUE splverifierCounter < 4 [L686] tmp = __VERIFIER_nondet_int() [L688] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L690] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L849] COND TRUE waterLevel < 2 [L850] waterLevel = waterLevel + 1 [L690] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L696] tmp___0 = __VERIFIER_nondet_int() [L698] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L706] tmp___2 = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp___2)) [L714] tmp___1 = __VERIFIER_nondet_int() [L716] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L723] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L148] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L155] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L157] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L177] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L180] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L195] FCALL processEnvironment__wrappee__methaneQuery() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L157] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L163] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L101] int tmp ; [L102] int tmp___0 ; [L103] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L107] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L870] int retValue_acc ; [L873] retValue_acc = methaneLevelCritical [L874] return (retValue_acc); [L107] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L107] tmp = isMethaneLevelCritical() [L109] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L113] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L902] int retValue_acc ; [L905] retValue_acc = waterLevel [L906] return (retValue_acc); [L113] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L113] tmp___0 = getWaterLevel() [L115] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, waterLevel=2] [L117] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L246] int retValue_acc ; [L249] retValue_acc = pumpRunning [L250] return (retValue_acc); [L117] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, waterLevel=2] [L117] tmp___1 = isPumpRunning() [L119] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L123] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L54] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 176 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 855 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 501 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 301 IncrementalHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 354 mSDtfsCounter, 301 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 267 NumberOfCodeBlocks, 267 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 329 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-03-31 23:54:40,313 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...