./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ae2f7a85a5093ad80fd05f69a7d0bbcf9a510999a9154b6f2d8037f035f00930 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:27:18,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:27:18,165 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:27:18,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:27:18,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:27:18,214 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:27:18,215 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:27:18,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:27:18,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:27:18,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:27:18,217 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:27:18,217 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:27:18,217 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:27:18,218 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:27:18,218 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:27:18,219 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:27:18,219 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:27:18,219 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:27:18,220 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:27:18,220 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:27:18,221 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:27:18,225 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:27:18,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:27:18,226 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:27:18,226 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:27:18,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:27:18,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:27:18,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:27:18,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:27:18,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:27:18,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:27:18,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:27:18,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:27:18,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:27:18,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:27:18,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:27:18,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:27:18,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:27:18,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:18,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:27:18,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:27:18,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:27:18,243 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:27:18,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:27:18,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:27:18,244 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:27:18,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:27:18,244 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae2f7a85a5093ad80fd05f69a7d0bbcf9a510999a9154b6f2d8037f035f00930 [2024-11-02 12:27:18,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:27:18,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:27:18,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:27:18,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:27:18,569 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:27:18,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c Unable to find full path for "g++" [2024-11-02 12:27:20,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:27:21,015 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:27:21,016 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c [2024-11-02 12:27:21,034 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/data/96bacb4b9/12302f3ee4df441dae0c3752a1651ddb/FLAG2f2e56859 [2024-11-02 12:27:21,286 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/data/96bacb4b9/12302f3ee4df441dae0c3752a1651ddb [2024-11-02 12:27:21,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:27:21,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:27:21,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:21,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:27:21,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:27:21,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677f50d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21, skipping insertion in model container [2024-11-02 12:27:21,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,348 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:27:21,685 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c[17123,17136] [2024-11-02 12:27:21,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:21,706 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:27:21,720 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2024-11-02 12:27:21,722 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [150] [2024-11-02 12:27:21,722 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [252] [2024-11-02 12:27:21,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [618] [2024-11-02 12:27:21,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [646] [2024-11-02 12:27:21,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [868] [2024-11-02 12:27:21,723 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [877] [2024-11-02 12:27:21,724 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [946] [2024-11-02 12:27:21,833 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/sv-benchmarks/c/product-lines/minepump_spec1_product48.cil.c[17123,17136] [2024-11-02 12:27:21,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:21,862 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:27:21,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21 WrapperNode [2024-11-02 12:27:21,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:21,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:21,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:27:21,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:27:21,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,917 INFO L138 Inliner]: procedures = 56, calls = 102, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 191 [2024-11-02 12:27:21,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:21,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:27:21,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:27:21,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:27:21,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,944 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:27:21,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:27:21,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:27:21,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:27:21,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (1/1) ... [2024-11-02 12:27:21,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:21,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:22,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:27:22,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:27:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:27:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-02 12:27:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-02 12:27:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:27:22,041 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:27:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:27:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:27:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2024-11-02 12:27:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2024-11-02 12:27:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-02 12:27:22,042 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-02 12:27:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-02 12:27:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-02 12:27:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-02 12:27:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-02 12:27:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-02 12:27:22,043 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-02 12:27:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:27:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-02 12:27:22,044 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-02 12:27:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:27:22,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:27:22,147 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:27:22,149 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:27:22,547 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-02 12:27:22,547 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:27:22,717 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:27:22,717 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:27:22,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:22 BoogieIcfgContainer [2024-11-02 12:27:22,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:27:22,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:27:22,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:27:22,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:27:22,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:27:21" (1/3) ... [2024-11-02 12:27:22,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4218c11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:22, skipping insertion in model container [2024-11-02 12:27:22,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:21" (2/3) ... [2024-11-02 12:27:22,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4218c11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:22, skipping insertion in model container [2024-11-02 12:27:22,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:22" (3/3) ... [2024-11-02 12:27:22,728 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product48.cil.c [2024-11-02 12:27:22,748 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:27:22,748 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:27:22,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:27:22,816 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3e2847f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:27:22,816 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:27:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 53 states have internal predecessors, (62), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-02 12:27:22,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 12:27:22,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:22,832 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:22,832 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:22,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:22,838 INFO L85 PathProgramCache]: Analyzing trace with hash 451764533, now seen corresponding path program 1 times [2024-11-02 12:27:22,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:22,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707325124] [2024-11-02 12:27:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:22,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:23,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707325124] [2024-11-02 12:27:23,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707325124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:23,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:23,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:27:23,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286324971] [2024-11-02 12:27:23,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:23,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:27:23,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:23,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:27:23,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:27:23,061 INFO L87 Difference]: Start difference. First operand has 71 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 53 states have internal predecessors, (62), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:27:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:23,169 INFO L93 Difference]: Finished difference Result 140 states and 189 transitions. [2024-11-02 12:27:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:27:23,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-02 12:27:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:23,183 INFO L225 Difference]: With dead ends: 140 [2024-11-02 12:27:23,184 INFO L226 Difference]: Without dead ends: 66 [2024-11-02 12:27:23,189 INFO L431 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 [2024-11-02 12:27:23,193 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:23,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:23,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-02 12:27:23,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-02 12:27:23,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 49 states have internal predecessors, (54), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-02 12:27:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2024-11-02 12:27:23,245 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 16 [2024-11-02 12:27:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:23,246 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2024-11-02 12:27:23,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:27:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2024-11-02 12:27:23,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:27:23,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:23,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:23,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:27:23,253 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:23,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:23,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1235459681, now seen corresponding path program 1 times [2024-11-02 12:27:23,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:23,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825748579] [2024-11-02 12:27:23,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:23,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:23,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:23,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825748579] [2024-11-02 12:27:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825748579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:23,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:23,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796019895] [2024-11-02 12:27:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:23,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:23,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:23,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:23,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:23,390 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:27:23,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:23,500 INFO L93 Difference]: Finished difference Result 104 states and 132 transitions. [2024-11-02 12:27:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:23,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-02 12:27:23,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:23,503 INFO L225 Difference]: With dead ends: 104 [2024-11-02 12:27:23,503 INFO L226 Difference]: Without dead ends: 58 [2024-11-02 12:27:23,504 INFO L431 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 [2024-11-02 12:27:23,506 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 14 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:23,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 102 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-02 12:27:23,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-02 12:27:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 44 states have internal predecessors, (48), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-02 12:27:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2024-11-02 12:27:23,526 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 17 [2024-11-02 12:27:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:23,526 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2024-11-02 12:27:23,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:27:23,527 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2024-11-02 12:27:23,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:27:23,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:23,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:23,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:27:23,528 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:23,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash 919406999, now seen corresponding path program 1 times [2024-11-02 12:27:23,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:23,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064388909] [2024-11-02 12:27:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:23,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:23,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:23,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064388909] [2024-11-02 12:27:23,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064388909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:23,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:23,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:27:23,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049824485] [2024-11-02 12:27:23,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:23,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:27:23,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:23,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:27:23,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:27:23,657 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:27:23,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:23,779 INFO L93 Difference]: Finished difference Result 170 states and 219 transitions. [2024-11-02 12:27:23,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:27:23,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-02 12:27:23,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:23,784 INFO L225 Difference]: With dead ends: 170 [2024-11-02 12:27:23,784 INFO L226 Difference]: Without dead ends: 114 [2024-11-02 12:27:23,785 INFO L431 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 [2024-11-02 12:27:23,786 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 68 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:23,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 125 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-02 12:27:23,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2024-11-02 12:27:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 68 states have (on average 1.338235294117647) internal successors, (91), 83 states have internal predecessors, (91), 26 states have call successors, (26), 16 states have call predecessors, (26), 16 states have return successors, (26), 19 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-02 12:27:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 143 transitions. [2024-11-02 12:27:23,824 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 143 transitions. Word has length 20 [2024-11-02 12:27:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:23,824 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 143 transitions. [2024-11-02 12:27:23,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:27:23,825 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 143 transitions. [2024-11-02 12:27:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:27:23,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:23,826 INFO L215 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] [2024-11-02 12:27:23,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:27:23,827 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:23,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:23,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1931696497, now seen corresponding path program 1 times [2024-11-02 12:27:23,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:23,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455473073] [2024-11-02 12:27:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:23,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:24,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:24,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455473073] [2024-11-02 12:27:24,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455473073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:24,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:24,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:27:24,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283815090] [2024-11-02 12:27:24,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:24,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:24,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:24,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:24,041 INFO L87 Difference]: Start difference. First operand 111 states and 143 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:27:24,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:24,167 INFO L93 Difference]: Finished difference Result 298 states and 391 transitions. [2024-11-02 12:27:24,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:24,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-02 12:27:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:24,170 INFO L225 Difference]: With dead ends: 298 [2024-11-02 12:27:24,171 INFO L226 Difference]: Without dead ends: 189 [2024-11-02 12:27:24,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:27:24,173 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 40 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:24,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 157 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:24,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-02 12:27:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2024-11-02 12:27:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 121 states have (on average 1.28099173553719) internal successors, (155), 136 states have internal predecessors, (155), 36 states have call successors, (36), 30 states have call predecessors, (36), 30 states have return successors, (44), 33 states have call predecessors, (44), 36 states have call successors, (44) [2024-11-02 12:27:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 235 transitions. [2024-11-02 12:27:24,203 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 235 transitions. Word has length 23 [2024-11-02 12:27:24,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:24,204 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 235 transitions. [2024-11-02 12:27:24,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:27:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 235 transitions. [2024-11-02 12:27:24,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-02 12:27:24,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:24,206 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:24,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:27:24,207 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:24,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1952271027, now seen corresponding path program 1 times [2024-11-02 12:27:24,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:24,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161417738] [2024-11-02 12:27:24,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:24,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:27:24,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:24,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161417738] [2024-11-02 12:27:24,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161417738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:24,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:24,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:27:24,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496573597] [2024-11-02 12:27:24,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:24,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:27:24,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:27:24,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:27:24,554 INFO L87 Difference]: Start difference. First operand 188 states and 235 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:27:24,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:24,828 INFO L93 Difference]: Finished difference Result 540 states and 680 transitions. [2024-11-02 12:27:24,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:27:24,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2024-11-02 12:27:24,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:24,832 INFO L225 Difference]: With dead ends: 540 [2024-11-02 12:27:24,832 INFO L226 Difference]: Without dead ends: 354 [2024-11-02 12:27:24,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:27:24,837 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 108 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:24,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 235 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:27:24,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-02 12:27:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 312. [2024-11-02 12:27:24,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 209 states have (on average 1.277511961722488) internal successors, (267), 227 states have internal predecessors, (267), 51 states have call successors, (51), 47 states have call predecessors, (51), 51 states have return successors, (63), 51 states have call predecessors, (63), 51 states have call successors, (63) [2024-11-02 12:27:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 381 transitions. [2024-11-02 12:27:24,908 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 381 transitions. Word has length 36 [2024-11-02 12:27:24,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:24,908 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 381 transitions. [2024-11-02 12:27:24,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:27:24,909 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 381 transitions. [2024-11-02 12:27:24,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-02 12:27:24,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:24,911 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:24,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:27:24,912 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:24,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1579605514, now seen corresponding path program 1 times [2024-11-02 12:27:24,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:24,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548089290] [2024-11-02 12:27:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:24,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:27:25,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:25,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548089290] [2024-11-02 12:27:25,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548089290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:25,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:25,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:27:25,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573200836] [2024-11-02 12:27:25,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:25,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:27:25,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:25,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:27:25,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:27:25,037 INFO L87 Difference]: Start difference. First operand 312 states and 381 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:27:25,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:25,270 INFO L93 Difference]: Finished difference Result 914 states and 1138 transitions. [2024-11-02 12:27:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:27:25,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2024-11-02 12:27:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:25,279 INFO L225 Difference]: With dead ends: 914 [2024-11-02 12:27:25,279 INFO L226 Difference]: Without dead ends: 604 [2024-11-02 12:27:25,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:27:25,286 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 49 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:25,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 257 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-02 12:27:25,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 588. [2024-11-02 12:27:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 399 states have (on average 1.2606516290726817) internal successors, (503), 426 states have internal predecessors, (503), 94 states have call successors, (94), 86 states have call predecessors, (94), 94 states have return successors, (118), 94 states have call predecessors, (118), 94 states have call successors, (118) [2024-11-02 12:27:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 715 transitions. [2024-11-02 12:27:25,382 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 715 transitions. Word has length 39 [2024-11-02 12:27:25,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:25,382 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 715 transitions. [2024-11-02 12:27:25,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:27:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 715 transitions. [2024-11-02 12:27:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 12:27:25,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:25,389 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:25,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:27:25,389 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:25,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash 294940026, now seen corresponding path program 1 times [2024-11-02 12:27:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:25,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394279129] [2024-11-02 12:27:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:25,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:27:25,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:25,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394279129] [2024-11-02 12:27:25,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394279129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:25,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:25,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-02 12:27:25,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034834872] [2024-11-02 12:27:25,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:25,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:27:25,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:27:25,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:27:25,732 INFO L87 Difference]: Start difference. First operand 588 states and 715 transitions. Second operand has 13 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-02 12:27:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:26,772 INFO L93 Difference]: Finished difference Result 1165 states and 1535 transitions. [2024-11-02 12:27:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-02 12:27:26,772 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2024-11-02 12:27:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:26,778 INFO L225 Difference]: With dead ends: 1165 [2024-11-02 12:27:26,778 INFO L226 Difference]: Without dead ends: 925 [2024-11-02 12:27:26,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2024-11-02 12:27:26,781 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 341 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:26,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 278 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:27:26,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-02 12:27:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 755. [2024-11-02 12:27:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 513 states have (on average 1.263157894736842) internal successors, (648), 547 states have internal predecessors, (648), 122 states have call successors, (122), 104 states have call predecessors, (122), 119 states have return successors, (167), 124 states have call predecessors, (167), 122 states have call successors, (167) [2024-11-02 12:27:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 937 transitions. [2024-11-02 12:27:26,897 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 937 transitions. Word has length 42 [2024-11-02 12:27:26,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:26,897 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 937 transitions. [2024-11-02 12:27:26,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-02 12:27:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 937 transitions. [2024-11-02 12:27:26,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-02 12:27:26,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:26,906 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:26,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:27:26,906 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:26,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:26,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2076856982, now seen corresponding path program 1 times [2024-11-02 12:27:26,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:26,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971774334] [2024-11-02 12:27:26,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:26,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:27:26,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971774334] [2024-11-02 12:27:26,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971774334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:26,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:26,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:27:26,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248323044] [2024-11-02 12:27:26,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:26,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:27:26,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:26,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:27:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:26,976 INFO L87 Difference]: Start difference. First operand 755 states and 937 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 12:27:27,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:27,173 INFO L93 Difference]: Finished difference Result 1224 states and 1517 transitions. [2024-11-02 12:27:27,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:27:27,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 64 [2024-11-02 12:27:27,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:27,177 INFO L225 Difference]: With dead ends: 1224 [2024-11-02 12:27:27,177 INFO L226 Difference]: Without dead ends: 471 [2024-11-02 12:27:27,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:27:27,182 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 92 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:27,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 126 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:27:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-02 12:27:27,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 463. [2024-11-02 12:27:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 320 states have (on average 1.25) internal successors, (400), 341 states have internal predecessors, (400), 72 states have call successors, (72), 63 states have call predecessors, (72), 70 states have return successors, (91), 73 states have call predecessors, (91), 72 states have call successors, (91) [2024-11-02 12:27:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 563 transitions. [2024-11-02 12:27:27,249 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 563 transitions. Word has length 64 [2024-11-02 12:27:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:27,249 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 563 transitions. [2024-11-02 12:27:27,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-02 12:27:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 563 transitions. [2024-11-02 12:27:27,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-02 12:27:27,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:27,252 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:27,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:27:27,253 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:27,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:27,253 INFO L85 PathProgramCache]: Analyzing trace with hash 475095526, now seen corresponding path program 1 times [2024-11-02 12:27:27,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:27,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049585000] [2024-11-02 12:27:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:27,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-02 12:27:27,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:27:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049585000] [2024-11-02 12:27:27,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049585000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:27,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:27,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-02 12:27:27,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242292376] [2024-11-02 12:27:27,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:27,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 12:27:27,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:27:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 12:27:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-02 12:27:27,460 INFO L87 Difference]: Start difference. First operand 463 states and 563 transitions. Second operand has 10 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-02 12:27:27,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:27,872 INFO L93 Difference]: Finished difference Result 948 states and 1184 transitions. [2024-11-02 12:27:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-02 12:27:27,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) Word has length 79 [2024-11-02 12:27:27,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:27,874 INFO L225 Difference]: With dead ends: 948 [2024-11-02 12:27:27,874 INFO L226 Difference]: Without dead ends: 0 [2024-11-02 12:27:27,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:27:27,877 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 57 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:27:27,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 339 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:27:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-02 12:27:27,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-02 12:27:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:27:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-02 12:27:27,880 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2024-11-02 12:27:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:27,880 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-02 12:27:27,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-02 12:27:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-02 12:27:27,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-02 12:27:27,883 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-02 12:27:27,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:27:27,887 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:27,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-02 12:27:32,088 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:27:32,120 WARN L156 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (= 1 ~systemActive~0) (and (not (= ~waterLevel~0 1)) (not (= 0 ~systemActive~0))))) Eliminated clause: (or (= 1 ~systemActive~0) (and (not (= ~waterLevel~0 1)) (not (= 0 ~systemActive~0)))) [2024-11-02 12:27:32,142 WARN L156 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (and (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 0)) (or (= 1 ~systemActive~0) (and (= ~pumpRunning~0 0) (= 0 ~systemActive~0)))) Eliminated clause: (or (= 1 ~systemActive~0) (and (= ~pumpRunning~0 0) (= 0 ~systemActive~0))) [2024-11-02 12:27:32,148 WARN L156 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse0 (= 0 ~systemActive~0))) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (= ~pumpRunning~0 0) (not .cse0)) (or (= 1 ~systemActive~0) .cse0) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)))) Eliminated clause: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (= ~pumpRunning~0 0) (not .cse0)) (or (= 1 ~systemActive~0) .cse0))) [2024-11-02 12:27:32,186 WARN L156 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 1 ~systemActive~0) (or (= ~methaneLevelCritical~0 0) (= |old(~pumpRunning~0)| 0))) Eliminated clause: (and (= 1 ~systemActive~0) (or (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0))) [2024-11-02 12:27:32,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:27:32 BoogieIcfgContainer [2024-11-02 12:27:32,193 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:27:32,194 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:27:32,194 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:27:32,194 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:27:32,195 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:22" (3/4) ... [2024-11-02 12:27:32,197 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-02 12:27:32,200 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-02 12:27:32,201 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-02 12:27:32,201 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-02 12:27:32,201 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-02 12:27:32,201 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-02 12:27:32,201 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2024-11-02 12:27:32,201 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-02 12:27:32,202 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-02 12:27:32,202 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-02 12:27:32,214 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2024-11-02 12:27:32,214 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-02 12:27:32,215 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-02 12:27:32,215 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:27:32,215 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-02 12:27:32,249 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning)) && ((pumpRunning == 0) || (0 != systemActive))) && ((1 == systemActive) || (0 == systemActive))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-02 12:27:32,296 WARN L140 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == \old(pumpRunning)) && ((pumpRunning == 0) || (0 != systemActive))) && ((1 == systemActive) || (0 == systemActive))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-02 12:27:32,359 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 12:27:32,360 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/witness.yml [2024-11-02 12:27:32,360 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:27:32,360 INFO L158 Benchmark]: Toolchain (without parser) took 11070.29ms. Allocated memory was 127.9MB in the beginning and 192.9MB in the end (delta: 65.0MB). Free memory was 86.2MB in the beginning and 125.5MB in the end (delta: -39.2MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2024-11-02 12:27:32,361 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 127.9MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:27:32,361 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.34ms. Allocated memory is still 127.9MB. Free memory was 86.0MB in the beginning and 64.5MB in the end (delta: 21.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-02 12:27:32,361 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.54ms. Allocated memory is still 127.9MB. Free memory was 64.5MB in the beginning and 62.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:27:32,361 INFO L158 Benchmark]: Boogie Preprocessor took 37.66ms. Allocated memory is still 127.9MB. Free memory was 62.5MB in the beginning and 60.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:27:32,362 INFO L158 Benchmark]: RCFGBuilder took 761.92ms. Allocated memory was 127.9MB in the beginning and 159.4MB in the end (delta: 31.5MB). Free memory was 60.8MB in the beginning and 122.2MB in the end (delta: -61.4MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2024-11-02 12:27:32,362 INFO L158 Benchmark]: TraceAbstraction took 9472.21ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 121.3MB in the beginning and 133.9MB in the end (delta: -12.5MB). Peak memory consumption was 105.4MB. Max. memory is 16.1GB. [2024-11-02 12:27:32,362 INFO L158 Benchmark]: Witness Printer took 166.21ms. Allocated memory is still 192.9MB. Free memory was 133.9MB in the beginning and 125.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-02 12:27:32,364 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 127.9MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 571.34ms. Allocated memory is still 127.9MB. Free memory was 86.0MB in the beginning and 64.5MB in the end (delta: 21.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.54ms. Allocated memory is still 127.9MB. Free memory was 64.5MB in the beginning and 62.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.66ms. Allocated memory is still 127.9MB. Free memory was 62.5MB in the beginning and 60.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 761.92ms. Allocated memory was 127.9MB in the beginning and 159.4MB in the end (delta: 31.5MB). Free memory was 60.8MB in the beginning and 122.2MB in the end (delta: -61.4MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * TraceAbstraction took 9472.21ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 121.3MB in the beginning and 133.9MB in the end (delta: -12.5MB). Peak memory consumption was 105.4MB. Max. memory is 16.1GB. * Witness Printer took 166.21ms. Allocated memory is still 192.9MB. Free memory was 133.9MB in the beginning and 125.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] - GenericResultAtLocation [Line: 150]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [150] - GenericResultAtLocation [Line: 252]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [252] - GenericResultAtLocation [Line: 618]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [618] - GenericResultAtLocation [Line: 646]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [646] - GenericResultAtLocation [Line: 868]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [868] - GenericResultAtLocation [Line: 877]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [877] - GenericResultAtLocation [Line: 946]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [946] * 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 - PositiveResult [Line: 873]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 785 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 769 mSDsluCounter, 1692 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1126 mSDsCounter, 270 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1160 IncrementalHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 270 mSolverCounterUnsat, 566 mSDtfsCounter, 1160 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=755occurred in iteration=7, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 240 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 649 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 63/63 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 163]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 888]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) || (((pumpRunning == 0) && (splverifierCounter == 0)) && (0 == systemActive))) || (((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 887]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 654]: Location Invariant Derived location invariant: ((((pumpRunning == \old(pumpRunning)) && ((pumpRunning == 0) || (0 != systemActive))) && ((1 == systemActive) || (0 == systemActive))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) - ProcedureContractResult [Line: 762]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: ((1 == systemActive) || ((waterLevel != 1) && (0 != systemActive))) Ensures: (((pumpRunning == 0) && ((1 == systemActive) || ((waterLevel != 1) && (0 != systemActive)))) && (((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 678]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((methaneLevelCritical == 0) && (1 == systemActive)) || ((pumpRunning == 0) && (1 == systemActive))) Ensures: ((((methaneLevelCritical == 0) && (1 == systemActive)) || ((pumpRunning == 0) && (1 == systemActive))) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 83]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((1 == systemActive) || ((pumpRunning == 0) && (0 == systemActive))) Ensures: (((1 == systemActive) || ((pumpRunning == 0) && (0 == systemActive))) && (((((waterLevel == \old(waterLevel)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 654]: Procedure Contract for timeShift Derived contract for procedure timeShift. Requires: (((pumpRunning == 0) || (0 != systemActive)) && ((1 == systemActive) || (0 == systemActive))) Ensures: ((((((1 == systemActive) || ((\old(pumpRunning) == 0) && (0 == systemActive))) && (((pumpRunning == 0) || ((pumpRunning == \old(pumpRunning)) && (methaneLevelCritical == 0))) || (((waterLevel != 1) && (methaneLevelCritical == 0)) && (1 == systemActive)))) && (((pumpRunning == \old(pumpRunning)) || (methaneLevelCritical != 0)) || ((waterLevel != 1) && (1 == systemActive)))) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) && ((((methaneLevelCritical == \old(methaneLevelCritical)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 153]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((methaneLevelCritical == \old(methaneLevelCritical)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 95]: Procedure Contract for isMethaneLevelCritical Derived contract for procedure isMethaneLevelCritical. Requires: ((1 == systemActive) || ((pumpRunning == 0) && (0 == systemActive))) Ensures: (((\result == methaneLevelCritical) && ((1 == systemActive) || ((pumpRunning == 0) && (0 == systemActive)))) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 71]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((1 == systemActive) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) || ((pumpRunning == 0) && (0 == systemActive))) Ensures: ((((1 == systemActive) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) || ((pumpRunning == 0) && (0 == systemActive))) && (((((methaneLevelCritical == \old(methaneLevelCritical)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 686]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: ((1 == systemActive) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) Ensures: ((((pumpRunning == \old(pumpRunning)) || ((waterLevel != 1) && (methaneLevelCritical == 0))) && (((1 == systemActive) && (\old(pumpRunning) == 0)) || ((methaneLevelCritical == 0) && (1 == systemActive)))) && (((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 770]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: (1 == systemActive) Ensures: (((1 == systemActive) && (\result == methaneLevelCritical)) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (head == \old(head))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) RESULT: Ultimate proved your program to be correct! [2024-11-02 12:27:32,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_587bb0c6-1b25-4b15-a7f5-81ac4e74bbe9/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE