/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:58:31,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:58:31,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:58:31,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:58:31,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:58:31,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:58:31,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:58:31,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:58:31,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:58:31,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:58:31,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:58:31,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:58:31,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:58:31,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:58:31,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:58:31,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:58:31,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:58:31,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:58:31,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:58:31,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:58:31,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:58:31,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:58:31,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:58:31,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:58:31,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:58:31,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:58:31,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:58:31,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:58:31,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:58:31,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:58:31,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:58:31,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:58:31,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:58:31,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:58:31,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:58:31,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:58:31,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:58:31,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:58:31,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:58:31,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:58:31,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:58:31,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 05:58:31,621 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:58:31,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:58:31,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:58:31,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:58:31,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:58:31,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:58:31,622 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:58:31,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:58:31,622 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:58:31,622 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:58:31,623 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:58:31,623 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:58:31,623 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:58:31,623 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:58:31,623 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:58:31,623 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:58:31,623 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:58:31,623 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:58:31,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:58:31,624 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:58:31,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:58:31,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:58:31,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:58:31,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:58:31,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:58:31,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:58:31,625 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:58:31,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:58:31,625 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:58:31,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:58:31,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:58:31,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:58:31,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:58:31,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:58:31,626 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:58:31,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:58:31,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:58:31,626 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:58:31,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:58:31,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:58:31,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:58:31,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:58:31,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:58:31,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:58:31,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:58:31,853 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:58:31,854 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:58:31,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c [2023-04-01 05:58:32,832 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:58:33,045 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:58:33,046 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c [2023-04-01 05:58:33,053 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa7afc707/635c981a4ecf4680ac92f171f6e79255/FLAGed3c16141 [2023-04-01 05:58:33,386 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa7afc707/635c981a4ecf4680ac92f171f6e79255 [2023-04-01 05:58:33,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:58:33,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:58:33,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:58:33,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:58:33,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:58:33,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:58:33" (1/1) ... [2023-04-01 05:58:33,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7522bcb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33, skipping insertion in model container [2023-04-01 05:58:33,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:58:33" (1/1) ... [2023-04-01 05:58:33,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:58:33,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:58:33,584 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_product39.cil.c[7086,7099] [2023-04-01 05:58:33,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:58:33,669 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:58:33,699 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_product39.cil.c[7086,7099] [2023-04-01 05:58:33,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:58:33,728 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:58:33,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33 WrapperNode [2023-04-01 05:58:33,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:58:33,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:58:33,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:58:33,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:58:33,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33" (1/1) ... [2023-04-01 05:58:33,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33" (1/1) ... [2023-04-01 05:58:33,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33" (1/1) ... [2023-04-01 05:58:33,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33" (1/1) ... [2023-04-01 05:58:33,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33" (1/1) ... [2023-04-01 05:58:33,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33" (1/1) ... [2023-04-01 05:58:33,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33" (1/1) ... [2023-04-01 05:58:33,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33" (1/1) ... [2023-04-01 05:58:33,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:58:33,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:58:33,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:58:33,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:58:33,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33" (1/1) ... [2023-04-01 05:58:33,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:58:33,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:58:33,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 05:58:33,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 05:58:33,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 05:58:33,847 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 05:58:33,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 05:58:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 05:58:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 05:58:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 05:58:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 05:58:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 05:58:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 05:58:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 05:58:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 05:58:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 05:58:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:58:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-04-01 05:58:33,849 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:58:33,849 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:58:33,849 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 05:58:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 05:58:33,851 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 05:58:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 05:58:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:58:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 05:58:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 05:58:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 05:58:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 05:58:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 05:58:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 05:58:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:58:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:58:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:58:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:58:34,037 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:58:34,043 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:58:34,438 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:58:34,531 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:58:34,532 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 05:58:34,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:58:34 BoogieIcfgContainer [2023-04-01 05:58:34,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:58:34,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:58:34,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:58:34,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:58:34,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:58:33" (1/3) ... [2023-04-01 05:58:34,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b59dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:58:34, skipping insertion in model container [2023-04-01 05:58:34,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:58:33" (2/3) ... [2023-04-01 05:58:34,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b59dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:58:34, skipping insertion in model container [2023-04-01 05:58:34,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:58:34" (3/3) ... [2023-04-01 05:58:34,542 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2023-04-01 05:58:34,555 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:58:34,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:58:34,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:58:34,606 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;@304c892b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:58:34,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:58:34,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 69 states have (on average 1.289855072463768) internal successors, (89), 83 states have internal predecessors, (89), 48 states have call successors, (48), 29 states have call predecessors, (48), 29 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2023-04-01 05:58:34,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-01 05:58:34,616 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:58:34,617 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] [2023-04-01 05:58:34,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:58:34,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:58:34,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1441336009, now seen corresponding path program 1 times [2023-04-01 05:58:34,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:58:34,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135534394] [2023-04-01 05:58:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:58:34,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:58:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:58:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:58:34,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:58:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135534394] [2023-04-01 05:58:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135534394] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:58:34,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:58:34,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 05:58:34,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536343569] [2023-04-01 05:58:34,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:58:34,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 05:58:34,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:58:34,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 05:58:34,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:58:34,841 INFO L87 Difference]: Start difference. First operand has 149 states, 69 states have (on average 1.289855072463768) internal successors, (89), 83 states have internal predecessors, (89), 48 states have call successors, (48), 29 states have call predecessors, (48), 29 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) 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) [2023-04-01 05:58:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:58:34,945 INFO L93 Difference]: Finished difference Result 231 states and 284 transitions. [2023-04-01 05:58:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 05:58:34,964 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 [2023-04-01 05:58:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:58:34,979 INFO L225 Difference]: With dead ends: 231 [2023-04-01 05:58:34,979 INFO L226 Difference]: Without dead ends: 116 [2023-04-01 05:58:34,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:58:34,983 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:58:34,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:58:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-04-01 05:58:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-04-01 05:58:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 60 states have (on average 1.25) internal successors, (75), 71 states have internal predecessors, (75), 33 states have call successors, (33), 27 states have call predecessors, (33), 22 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-01 05:58:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2023-04-01 05:58:35,015 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 47 [2023-04-01 05:58:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:58:35,015 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2023-04-01 05:58:35,015 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) [2023-04-01 05:58:35,015 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2023-04-01 05:58:35,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 05:58:35,017 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:58:35,017 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] [2023-04-01 05:58:35,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:58:35,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:58:35,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:58:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1350790916, now seen corresponding path program 1 times [2023-04-01 05:58:35,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:58:35,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633661423] [2023-04-01 05:58:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:58:35,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:58:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:58:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:58:35,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:58:35,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633661423] [2023-04-01 05:58:35,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633661423] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:58:35,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:58:35,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 05:58:35,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78822050] [2023-04-01 05:58:35,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:58:35,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 05:58:35,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:58:35,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 05:58:35,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 05:58:35,135 INFO L87 Difference]: Start difference. First operand 116 states and 136 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) [2023-04-01 05:58:35,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:58:35,192 INFO L93 Difference]: Finished difference Result 182 states and 212 transitions. [2023-04-01 05:58:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 05:58:35,193 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 [2023-04-01 05:58:35,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:58:35,194 INFO L225 Difference]: With dead ends: 182 [2023-04-01 05:58:35,194 INFO L226 Difference]: Without dead ends: 108 [2023-04-01 05:58:35,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 05:58:35,195 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 11 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:58:35,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 204 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:58:35,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-04-01 05:58:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-04-01 05:58:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 66 states have internal predecessors, (69), 30 states have call successors, (30), 26 states have call predecessors, (30), 22 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-01 05:58:35,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2023-04-01 05:58:35,207 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 48 [2023-04-01 05:58:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:58:35,207 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2023-04-01 05:58:35,207 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) [2023-04-01 05:58:35,208 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2023-04-01 05:58:35,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 05:58:35,209 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:58:35,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:58:35,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 05:58:35,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:58:35,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:58:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash 721666740, now seen corresponding path program 1 times [2023-04-01 05:58:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:58:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499044572] [2023-04-01 05:58:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:58:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:58:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:58:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:58:35,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:58:35,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499044572] [2023-04-01 05:58:35,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499044572] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:58:35,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:58:35,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:58:35,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067092896] [2023-04-01 05:58:35,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:58:35,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:58:35,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:58:35,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:58:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:58:35,383 INFO L87 Difference]: Start difference. First operand 108 states and 125 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) [2023-04-01 05:58:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:58:35,622 INFO L93 Difference]: Finished difference Result 329 states and 394 transitions. [2023-04-01 05:58:35,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 05:58:35,623 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 [2023-04-01 05:58:35,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:58:35,629 INFO L225 Difference]: With dead ends: 329 [2023-04-01 05:58:35,629 INFO L226 Difference]: Without dead ends: 243 [2023-04-01 05:58:35,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 05:58:35,635 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 258 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:58:35,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 503 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:58:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-04-01 05:58:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 235. [2023-04-01 05:58:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 126 states have (on average 1.2857142857142858) internal successors, (162), 148 states have internal predecessors, (162), 61 states have call successors, (61), 53 states have call predecessors, (61), 47 states have return successors, (58), 45 states have call predecessors, (58), 57 states have call successors, (58) [2023-04-01 05:58:35,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 281 transitions. [2023-04-01 05:58:35,671 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 281 transitions. Word has length 51 [2023-04-01 05:58:35,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:58:35,672 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 281 transitions. [2023-04-01 05:58:35,672 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) [2023-04-01 05:58:35,672 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 281 transitions. [2023-04-01 05:58:35,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 05:58:35,678 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:58:35,679 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] [2023-04-01 05:58:35,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 05:58:35,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:58:35,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:58:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash 691198760, now seen corresponding path program 1 times [2023-04-01 05:58:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:58:35,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279962572] [2023-04-01 05:58:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:58:35,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:58:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:58:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:58:35,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:58:35,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279962572] [2023-04-01 05:58:35,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279962572] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:58:35,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:58:35,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 05:58:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723890971] [2023-04-01 05:58:35,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:58:35,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:58:35,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:58:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:58:35,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:58:35,835 INFO L87 Difference]: Start difference. First operand 235 states and 281 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 05:58:35,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:58:35,986 INFO L93 Difference]: Finished difference Result 643 states and 796 transitions. [2023-04-01 05:58:35,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 05:58:35,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2023-04-01 05:58:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:58:35,989 INFO L225 Difference]: With dead ends: 643 [2023-04-01 05:58:35,989 INFO L226 Difference]: Without dead ends: 430 [2023-04-01 05:58:35,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:58:35,991 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 82 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:58:35,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 476 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:58:35,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-04-01 05:58:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 412. [2023-04-01 05:58:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 227 states have (on average 1.2907488986784141) internal successors, (293), 264 states have internal predecessors, (293), 104 states have call successors, (104), 88 states have call predecessors, (104), 80 states have return successors, (106), 76 states have call predecessors, (106), 100 states have call successors, (106) [2023-04-01 05:58:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 503 transitions. [2023-04-01 05:58:36,020 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 503 transitions. Word has length 56 [2023-04-01 05:58:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:58:36,021 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 503 transitions. [2023-04-01 05:58:36,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 05:58:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 503 transitions. [2023-04-01 05:58:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-01 05:58:36,022 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:58:36,022 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] [2023-04-01 05:58:36,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 05:58:36,023 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:58:36,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:58:36,023 INFO L85 PathProgramCache]: Analyzing trace with hash 770454944, now seen corresponding path program 1 times [2023-04-01 05:58:36,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:58:36,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130925194] [2023-04-01 05:58:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:58:36,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:58:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 05:58:36,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 05:58:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 05:58:36,094 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 05:58:36,094 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 05:58:36,094 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 05:58:36,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 05:58:36,098 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-04-01 05:58:36,101 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 05:58:36,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 05:58:36 BoogieIcfgContainer [2023-04-01 05:58:36,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 05:58:36,138 INFO L158 Benchmark]: Toolchain (without parser) took 2749.12ms. Allocated memory is still 262.1MB. Free memory was 223.7MB in the beginning and 190.2MB in the end (delta: 33.5MB). Peak memory consumption was 34.1MB. Max. memory is 8.0GB. [2023-04-01 05:58:36,138 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 218.1MB. Free memory is still 163.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:58:36,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.83ms. Allocated memory is still 262.1MB. Free memory was 223.7MB in the beginning and 205.4MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-01 05:58:36,139 INFO L158 Benchmark]: Boogie Preprocessor took 66.37ms. Allocated memory is still 262.1MB. Free memory was 205.4MB in the beginning and 201.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-04-01 05:58:36,141 INFO L158 Benchmark]: RCFGBuilder took 739.13ms. Allocated memory is still 262.1MB. Free memory was 201.7MB in the beginning and 142.4MB in the end (delta: 59.2MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. [2023-04-01 05:58:36,143 INFO L158 Benchmark]: TraceAbstraction took 1599.97ms. Allocated memory is still 262.1MB. Free memory was 141.9MB in the beginning and 190.2MB in the end (delta: -48.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:58:36,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 218.1MB. Free memory is still 163.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 335.83ms. Allocated memory is still 262.1MB. Free memory was 223.7MB in the beginning and 205.4MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 66.37ms. Allocated memory is still 262.1MB. Free memory was 205.4MB in the beginning and 201.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 739.13ms. Allocated memory is still 262.1MB. Free memory was 201.7MB in the beginning and 142.4MB in the end (delta: 59.2MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1599.97ms. Allocated memory is still 262.1MB. Free memory was 141.9MB in the beginning and 190.2MB in the end (delta: -48.3MB). There was no memory consumed. 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: 461]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L95] int waterLevel = 1; [L96] int methaneLevelCritical = 0; [L195] int pumpRunning = 0; [L196] int systemActive = 1; [L635] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L832] int cleanupTimeShifts = 4; [L905] int retValue_acc ; [L906] 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] [L910] 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] [L911] 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] [L912] 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] [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); [L912] 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] [L912] tmp = valid_product() [L914] 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] [L916] 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] [L917] 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] [L899] 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] [L391] int splverifierCounter ; [L392] int tmp ; [L393] int tmp___0 ; [L394] int tmp___1 ; [L395] int tmp___2 ; [L398] 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] [L400] 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] [L402] COND TRUE splverifierCounter < 4 [L408] tmp = __VERIFIER_nondet_int() [L410] 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] [L412] 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] [L113] COND TRUE waterLevel < 2 [L114] waterLevel = waterLevel + 1 [L412] 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] [L418] tmp___0 = __VERIFIER_nondet_int() [L420] 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] [L428] tmp___2 = __VERIFIER_nondet_int() [L430] COND FALSE !(\read(tmp___2)) [L434] tmp___1 = __VERIFIER_nondet_int() [L436] 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] [L438] CALL stopSystem() 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=2] [L377] COND FALSE !(\read(pumpRunning)) 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=2] [L384] systemActive = 0 [L438] RET stopSystem() 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=0, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L445] 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=0, waterLevel=2] [L203] 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=0, waterLevel=2] [L210] COND FALSE !(\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=0, waterLevel=2] [L218] 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=0, waterLevel=2] [L929] int tmp ; [L930] int tmp___0 ; [L931] 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=0, waterLevel=2] [L935] 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=0, waterLevel=2] [L134] int retValue_acc ; [L137] retValue_acc = methaneLevelCritical [L138] return (retValue_acc); [L935] 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=0, waterLevel=2] [L935] tmp = isMethaneLevelCritical() [L937] 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=0, tmp=0, waterLevel=2] [L941] 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=0, waterLevel=2] [L166] int retValue_acc ; [L169] retValue_acc = waterLevel [L170] return (retValue_acc); [L941] 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=0, tmp=0, waterLevel=2] [L941] tmp___0 = getWaterLevel() [L943] 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=0, tmp=0, tmp___0=2, waterLevel=2] [L945] 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=0, waterLevel=2] [L310] int retValue_acc ; [L313] retValue_acc = pumpRunning [L314] return (retValue_acc); [L945] 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=0, tmp=0, tmp___0=2, waterLevel=2] [L945] tmp___1 = isPumpRunning() [L947] 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=0, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L951] 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=0, waterLevel=2] [L461] 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=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 188 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 357 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 351 mSDsluCounter, 1313 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 833 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 439 IncrementalHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 480 mSDtfsCounter, 439 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=412occurred in iteration=4, InterpolantAutomatonStates: 19, 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, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 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! [2023-04-01 05:58:36,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...