./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje --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 5780768f89256c506186805750dd5ec09f07e7c3b9baffd6ca5edbcb4a88d3de --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:22:16,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:22:16,374 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:22:16,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:22:16,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:22:16,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:22:16,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:22:16,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:22:16,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:22:16,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:22:16,418 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:22:16,419 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:22:16,420 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:22:16,420 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:22:16,421 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:22:16,421 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:22:16,422 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:22:16,422 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:22:16,423 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:22:16,423 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:22:16,424 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:22:16,425 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:22:16,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:22:16,449 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:22:16,449 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:22:16,450 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:22:16,450 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:22:16,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:22:16,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:22:16,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:22:16,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:22:16,453 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:22:16,453 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:22:16,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:22:16,454 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:22:16,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:22:16,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:22:16,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:22:16,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:22:16,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:22:16,457 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:22:16,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:22:16,458 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:22:16,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:22:16,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:22:16,459 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:22:16,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:22:16,460 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_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5780768f89256c506186805750dd5ec09f07e7c3b9baffd6ca5edbcb4a88d3de [2024-11-09 07:22:16,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:22:16,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:22:16,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:22:16,818 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:22:16,818 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:22:16,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c Unable to find full path for "g++" [2024-11-09 07:22:19,354 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:22:19,670 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:22:19,671 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c [2024-11-09 07:22:19,698 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/data/19434e8f6/8f90f18ba88c45c0b3aeb070d07ce92d/FLAGf5fe16cb9 [2024-11-09 07:22:19,942 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/data/19434e8f6/8f90f18ba88c45c0b3aeb070d07ce92d [2024-11-09 07:22:19,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:22:19,947 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:22:19,949 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:22:19,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:22:19,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:22:19,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:22:19" (1/1) ... [2024-11-09 07:22:19,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3579f373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:19, skipping insertion in model container [2024-11-09 07:22:19,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:22:19" (1/1) ... [2024-11-09 07:22:20,016 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:22:20,355 WARN L250 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_8d3fa6be-370e-4824-b37e-7ebacb47a554/sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c[7019,7032] [2024-11-09 07:22:20,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:22:20,530 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:22:20,544 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [49] [2024-11-09 07:22:20,546 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [121] [2024-11-09 07:22:20,547 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [333] [2024-11-09 07:22:20,547 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [432] [2024-11-09 07:22:20,547 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [467] [2024-11-09 07:22:20,548 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [476] [2024-11-09 07:22:20,548 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [502] [2024-11-09 07:22:20,548 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [597] [2024-11-09 07:22:20,602 WARN L250 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_8d3fa6be-370e-4824-b37e-7ebacb47a554/sv-benchmarks/c/product-lines/minepump_spec1_product46.cil.c[7019,7032] [2024-11-09 07:22:20,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:22:20,731 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:22:20,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20 WrapperNode [2024-11-09 07:22:20,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:22:20,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:22:20,737 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:22:20,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:22:20,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (1/1) ... [2024-11-09 07:22:20,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (1/1) ... [2024-11-09 07:22:20,880 INFO L138 Inliner]: procedures = 55, calls = 100, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 187 [2024-11-09 07:22:20,885 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:22:20,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:22:20,886 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:22:20,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:22:20,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (1/1) ... [2024-11-09 07:22:20,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (1/1) ... [2024-11-09 07:22:20,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (1/1) ... [2024-11-09 07:22:20,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (1/1) ... [2024-11-09 07:22:20,919 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (1/1) ... [2024-11-09 07:22:20,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (1/1) ... [2024-11-09 07:22:20,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (1/1) ... [2024-11-09 07:22:20,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (1/1) ... [2024-11-09 07:22:20,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:22:20,948 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:22:20,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:22:20,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:22:20,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (1/1) ... [2024-11-09 07:22:20,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:22:20,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:22:20,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:22:21,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:22:21,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:22:21,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 07:22:21,056 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 07:22:21,056 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2024-11-09 07:22:21,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2024-11-09 07:22:21,057 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 07:22:21,058 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 07:22:21,058 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 07:22:21,058 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 07:22:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 07:22:21,059 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 07:22:21,059 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 07:22:21,059 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-09 07:22:21,060 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-09 07:22:21,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-09 07:22:21,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:22:21,061 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 07:22:21,061 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 07:22:21,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:22:21,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:22:21,183 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:22:21,187 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:22:21,678 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-09 07:22:21,679 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:22:21,900 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:22:21,900 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 07:22:21,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:22:21 BoogieIcfgContainer [2024-11-09 07:22:21,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:22:21,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:22:21,904 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:22:21,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:22:21,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:22:19" (1/3) ... [2024-11-09 07:22:21,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c22b328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:22:21, skipping insertion in model container [2024-11-09 07:22:21,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:22:20" (2/3) ... [2024-11-09 07:22:21,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c22b328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:22:21, skipping insertion in model container [2024-11-09 07:22:21,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:22:21" (3/3) ... [2024-11-09 07:22:21,915 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product46.cil.c [2024-11-09 07:22:21,939 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:22:21,939 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 07:22:22,035 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:22:22,044 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;@7531b3f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:22:22,044 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 07:22:22,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 47 states have internal predecessors, (54), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 07:22:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:22:22,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:22,064 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:22:22,064 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:22:22,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:22,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1973100108, now seen corresponding path program 1 times [2024-11-09 07:22:22,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:22,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172070406] [2024-11-09 07:22:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:22,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:22,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:22,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172070406] [2024-11-09 07:22:22,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172070406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:22:22,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:22:22,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:22:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421422808] [2024-11-09 07:22:22,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:22:22,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 07:22:22,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:22,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 07:22:22,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 07:22:22,401 INFO L87 Difference]: Start difference. First operand has 63 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 47 states have internal predecessors, (54), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) 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) [2024-11-09 07:22:22,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:22,499 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2024-11-09 07:22:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 07:22:22,505 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 [2024-11-09 07:22:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:22,520 INFO L225 Difference]: With dead ends: 124 [2024-11-09 07:22:22,521 INFO L226 Difference]: Without dead ends: 58 [2024-11-09 07:22:22,526 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 [2024-11-09 07:22:22,534 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:22,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:22:22,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-09 07:22:22,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-09 07:22:22,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 43 states have internal predecessors, (46), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 07:22:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-11-09 07:22:22,612 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 16 [2024-11-09 07:22:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:22,614 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-11-09 07:22:22,614 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) [2024-11-09 07:22:22,615 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-11-09 07:22:22,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 07:22:22,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:22,621 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:22:22,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:22:22,622 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:22:22,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash -510740063, now seen corresponding path program 1 times [2024-11-09 07:22:22,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:22,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039781275] [2024-11-09 07:22:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:22,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:22,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:22,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039781275] [2024-11-09 07:22:22,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039781275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:22:22,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:22:22,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:22:22,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558528915] [2024-11-09 07:22:22,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:22:22,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:22:22,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:22,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:22:22,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:22:22,858 INFO L87 Difference]: Start difference. First operand 58 states and 73 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) [2024-11-09 07:22:22,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:22,951 INFO L93 Difference]: Finished difference Result 93 states and 117 transitions. [2024-11-09 07:22:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:22:22,953 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 [2024-11-09 07:22:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:22,954 INFO L225 Difference]: With dead ends: 93 [2024-11-09 07:22:22,955 INFO L226 Difference]: Without dead ends: 50 [2024-11-09 07:22:22,956 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 [2024-11-09 07:22:22,959 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:22,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 87 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:22:22,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-09 07:22:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-09 07:22:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 38 states have internal predecessors, (40), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-09 07:22:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2024-11-09 07:22:22,974 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 17 [2024-11-09 07:22:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:22,977 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2024-11-09 07:22:22,978 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) [2024-11-09 07:22:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2024-11-09 07:22:22,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:22:22,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:22,980 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:22:22,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:22:22,980 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:22:22,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:22,984 INFO L85 PathProgramCache]: Analyzing trace with hash 429267615, now seen corresponding path program 1 times [2024-11-09 07:22:22,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:22,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234956118] [2024-11-09 07:22:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:22,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:22:23,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:23,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234956118] [2024-11-09 07:22:23,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234956118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:22:23,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:22:23,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:22:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014203946] [2024-11-09 07:22:23,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:22:23,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:22:23,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:23,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:22:23,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:22:23,285 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-09 07:22:23,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:23,499 INFO L93 Difference]: Finished difference Result 134 states and 170 transitions. [2024-11-09 07:22:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:22:23,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 19 [2024-11-09 07:22:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:23,504 INFO L225 Difference]: With dead ends: 134 [2024-11-09 07:22:23,505 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 07:22:23,506 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 [2024-11-09 07:22:23,508 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 36 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:23,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 130 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:22:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 07:22:23,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-09 07:22:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 62 states have internal predecessors, (68), 16 states have call successors, (16), 14 states have call predecessors, (16), 14 states have return successors, (20), 16 states have call predecessors, (20), 16 states have call successors, (20) [2024-11-09 07:22:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2024-11-09 07:22:23,532 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 19 [2024-11-09 07:22:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:23,533 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2024-11-09 07:22:23,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-09 07:22:23,534 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2024-11-09 07:22:23,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 07:22:23,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:23,536 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] [2024-11-09 07:22:23,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:22:23,536 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:22:23,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:23,537 INFO L85 PathProgramCache]: Analyzing trace with hash -659151878, now seen corresponding path program 1 times [2024-11-09 07:22:23,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:23,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734631476] [2024-11-09 07:22:23,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:23,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:22:24,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:24,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734631476] [2024-11-09 07:22:24,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734631476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:22:24,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:22:24,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:22:24,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760247427] [2024-11-09 07:22:24,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:22:24,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:22:24,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:24,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:22:24,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:22:24,060 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-09 07:22:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:24,406 INFO L93 Difference]: Finished difference Result 242 states and 294 transitions. [2024-11-09 07:22:24,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:22:24,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 35 [2024-11-09 07:22:24,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:24,411 INFO L225 Difference]: With dead ends: 242 [2024-11-09 07:22:24,415 INFO L226 Difference]: Without dead ends: 158 [2024-11-09 07:22:24,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:22:24,420 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 81 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:24,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 183 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:22:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-09 07:22:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 132. [2024-11-09 07:22:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 86 states have (on average 1.2209302325581395) internal successors, (105), 94 states have internal predecessors, (105), 22 states have call successors, (22), 21 states have call predecessors, (22), 23 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2024-11-09 07:22:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2024-11-09 07:22:24,488 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 35 [2024-11-09 07:22:24,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:24,489 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2024-11-09 07:22:24,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-09 07:22:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2024-11-09 07:22:24,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 07:22:24,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:24,491 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] [2024-11-09 07:22:24,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:22:24,496 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:22:24,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:24,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1029915623, now seen corresponding path program 1 times [2024-11-09 07:22:24,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:24,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347971786] [2024-11-09 07:22:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:24,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:22:24,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:24,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347971786] [2024-11-09 07:22:24,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347971786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:22:24,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:22:24,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:22:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21334817] [2024-11-09 07:22:24,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:22:24,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:22:24,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:24,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:22:24,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:22:24,768 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 07:22:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:25,031 INFO L93 Difference]: Finished difference Result 383 states and 460 transitions. [2024-11-09 07:22:25,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:22:25,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 38 [2024-11-09 07:22:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:25,041 INFO L225 Difference]: With dead ends: 383 [2024-11-09 07:22:25,041 INFO L226 Difference]: Without dead ends: 253 [2024-11-09 07:22:25,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:22:25,048 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 38 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:25,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 206 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:22:25,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-09 07:22:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 247. [2024-11-09 07:22:25,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 162 states have (on average 1.1975308641975309) internal successors, (194), 174 states have internal predecessors, (194), 41 states have call successors, (41), 39 states have call predecessors, (41), 43 states have return successors, (53), 43 states have call predecessors, (53), 41 states have call successors, (53) [2024-11-09 07:22:25,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 288 transitions. [2024-11-09 07:22:25,143 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 288 transitions. Word has length 38 [2024-11-09 07:22:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:25,144 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 288 transitions. [2024-11-09 07:22:25,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-09 07:22:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 288 transitions. [2024-11-09 07:22:25,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 07:22:25,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:25,153 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] [2024-11-09 07:22:25,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:22:25,153 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:22:25,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:25,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1233518832, now seen corresponding path program 1 times [2024-11-09 07:22:25,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:25,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614923434] [2024-11-09 07:22:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:25,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:22:25,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:25,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614923434] [2024-11-09 07:22:25,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614923434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:22:25,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:22:25,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 07:22:25,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560648951] [2024-11-09 07:22:25,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:22:25,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 07:22:25,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:25,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 07:22:25,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:22:25,650 INFO L87 Difference]: Start difference. First operand 247 states and 288 transitions. Second operand has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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) [2024-11-09 07:22:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:26,844 INFO L93 Difference]: Finished difference Result 437 states and 533 transitions. [2024-11-09 07:22:26,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 07:22:26,846 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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 41 [2024-11-09 07:22:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:26,850 INFO L225 Difference]: With dead ends: 437 [2024-11-09 07:22:26,850 INFO L226 Difference]: Without dead ends: 339 [2024-11-09 07:22:26,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 07:22:26,854 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 165 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:26,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 250 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:22:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-09 07:22:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2024-11-09 07:22:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 220 states have (on average 1.2) internal successors, (264), 237 states have internal predecessors, (264), 55 states have call successors, (55), 49 states have call predecessors, (55), 57 states have return successors, (81), 57 states have call predecessors, (81), 55 states have call successors, (81) [2024-11-09 07:22:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 400 transitions. [2024-11-09 07:22:26,939 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 400 transitions. Word has length 41 [2024-11-09 07:22:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:26,940 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 400 transitions. [2024-11-09 07:22:26,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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) [2024-11-09 07:22:26,941 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 400 transitions. [2024-11-09 07:22:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 07:22:26,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:26,949 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 07:22:26,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:22:26,950 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:22:26,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:26,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1273832552, now seen corresponding path program 1 times [2024-11-09 07:22:26,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:26,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964641119] [2024-11-09 07:22:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:26,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:22:27,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:27,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964641119] [2024-11-09 07:22:27,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964641119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:22:27,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:22:27,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:22:27,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089653743] [2024-11-09 07:22:27,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:22:27,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:22:27,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:27,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:22:27,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:22:27,108 INFO L87 Difference]: Start difference. First operand 333 states and 400 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 07:22:27,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:27,209 INFO L93 Difference]: Finished difference Result 658 states and 799 transitions. [2024-11-09 07:22:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:22:27,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 58 [2024-11-09 07:22:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:27,214 INFO L225 Difference]: With dead ends: 658 [2024-11-09 07:22:27,214 INFO L226 Difference]: Without dead ends: 327 [2024-11-09 07:22:27,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:22:27,217 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:27,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 46 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:22:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-09 07:22:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 306. [2024-11-09 07:22:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 202 states have (on average 1.1633663366336633) internal successors, (235), 216 states have internal predecessors, (235), 51 states have call successors, (51), 45 states have call predecessors, (51), 52 states have return successors, (70), 53 states have call predecessors, (70), 51 states have call successors, (70) [2024-11-09 07:22:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 356 transitions. [2024-11-09 07:22:27,293 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 356 transitions. Word has length 58 [2024-11-09 07:22:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:27,294 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 356 transitions. [2024-11-09 07:22:27,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 07:22:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 356 transitions. [2024-11-09 07:22:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 07:22:27,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:22:27,299 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-09 07:22:27,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 07:22:27,300 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:22:27,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:22:27,301 INFO L85 PathProgramCache]: Analyzing trace with hash -61445087, now seen corresponding path program 1 times [2024-11-09 07:22:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:22:27,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269839657] [2024-11-09 07:22:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:22:27,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:22:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:22:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 07:22:27,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:22:27,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269839657] [2024-11-09 07:22:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269839657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:22:27,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:22:27,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 07:22:27,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843069906] [2024-11-09 07:22:27,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:22:27,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:22:27,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:22:27,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:22:27,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:22:27,597 INFO L87 Difference]: Start difference. First operand 306 states and 356 transitions. Second operand has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-11-09 07:22:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:22:28,040 INFO L93 Difference]: Finished difference Result 632 states and 761 transitions. [2024-11-09 07:22:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:22:28,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 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 77 [2024-11-09 07:22:28,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:22:28,043 INFO L225 Difference]: With dead ends: 632 [2024-11-09 07:22:28,044 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 07:22:28,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-09 07:22:28,048 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 46 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:22:28,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 250 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:22:28,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 07:22:28,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 07:22:28,053 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) [2024-11-09 07:22:28,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 07:22:28,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2024-11-09 07:22:28,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:22:28,054 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 07:22:28,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-11-09 07:22:28,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 07:22:28,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 07:22:28,061 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 07:22:28,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 07:22:28,065 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:22:28,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 07:22:30,907 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 07:22:30,974 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (and (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 0)) (not (= 0 ~systemActive~0))) Eliminated clause: (not (= 0 ~systemActive~0)) [2024-11-09 07:22:30,987 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= 0 ~systemActive~0)) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1))) Eliminated clause: (not (= 0 ~systemActive~0)) [2024-11-09 07:22:31,003 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (let ((.cse0 (not (= 0 ~systemActive~0)))) (or (and (= ~methaneLevelCritical~0 0) .cse0) (and (= |old(~pumpRunning~0)| 0) .cse0)))) Eliminated clause: (let ((.cse0 (not (= 0 ~systemActive~0)))) (or (and (= ~methaneLevelCritical~0 0) .cse0) (and (= ~pumpRunning~0 0) .cse0))) [2024-11-09 07:22:31,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:22:31 BoogieIcfgContainer [2024-11-09 07:22:31,014 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 07:22:31,015 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 07:22:31,016 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 07:22:31,016 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 07:22:31,017 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:22:21" (3/4) ... [2024-11-09 07:22:31,020 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 07:22:31,024 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 07:22:31,024 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 07:22:31,024 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2024-11-09 07:22:31,024 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 07:22:31,024 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 07:22:31,025 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 07:22:31,025 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-09 07:22:31,025 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-09 07:22:31,037 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2024-11-09 07:22:31,038 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-09 07:22:31,038 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 07:22:31,039 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 07:22:31,039 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 07:22:31,077 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == \old(pumpRunning)) && (0 != systemActive)) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-09 07:22:31,124 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == \old(pumpRunning)) && (0 != systemActive)) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) [2024-11-09 07:22:31,199 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 07:22:31,200 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 07:22:31,200 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 07:22:31,201 INFO L158 Benchmark]: Toolchain (without parser) took 11253.96ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 94.0MB in the beginning and 93.5MB in the end (delta: 555.3kB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. [2024-11-09 07:22:31,201 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:22:31,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 787.23ms. Allocated memory is still 153.1MB. Free memory was 93.9MB in the beginning and 72.2MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 07:22:31,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 148.21ms. Allocated memory is still 153.1MB. Free memory was 72.1MB in the beginning and 121.8MB in the end (delta: -49.8MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2024-11-09 07:22:31,202 INFO L158 Benchmark]: Boogie Preprocessor took 61.40ms. Allocated memory is still 153.1MB. Free memory was 121.8MB in the beginning and 119.8MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:22:31,203 INFO L158 Benchmark]: RCFGBuilder took 952.72ms. Allocated memory is still 153.1MB. Free memory was 119.8MB in the beginning and 91.8MB in the end (delta: 28.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-09 07:22:31,203 INFO L158 Benchmark]: TraceAbstraction took 9111.01ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 91.2MB in the beginning and 100.9MB in the end (delta: -9.7MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. [2024-11-09 07:22:31,205 INFO L158 Benchmark]: Witness Printer took 184.89ms. Allocated memory is still 184.5MB. Free memory was 100.9MB in the beginning and 93.5MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 07:22:31,209 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 787.23ms. Allocated memory is still 153.1MB. Free memory was 93.9MB in the beginning and 72.2MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 148.21ms. Allocated memory is still 153.1MB. Free memory was 72.1MB in the beginning and 121.8MB in the end (delta: -49.8MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.40ms. Allocated memory is still 153.1MB. Free memory was 121.8MB in the beginning and 119.8MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 952.72ms. Allocated memory is still 153.1MB. Free memory was 119.8MB in the beginning and 91.8MB in the end (delta: 28.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 9111.01ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 91.2MB in the beginning and 100.9MB in the end (delta: -9.7MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. * Witness Printer took 184.89ms. Allocated memory is still 184.5MB. Free memory was 100.9MB in the beginning and 93.5MB in the end (delta: 7.4MB). 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,"scenario.i","") [49] - GenericResultAtLocation [Line: 121]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [121] - GenericResultAtLocation [Line: 333]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [333] - GenericResultAtLocation [Line: 432]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [432] - GenericResultAtLocation [Line: 467]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [467] - GenericResultAtLocation [Line: 476]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [476] - GenericResultAtLocation [Line: 502]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [502] - GenericResultAtLocation [Line: 597]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [597] * 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: 472]: 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 9 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 429 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 414 mSDsluCounter, 1214 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 826 mSDsCounter, 127 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 986 IncrementalHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 127 mSolverCounterUnsat, 388 mSDtfsCounter, 986 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=333occurred in iteration=6, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 293 ConstructedInterpolants, 0 QuantifiedInterpolants, 619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 60/60 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: 65]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0) && (splverifierCounter == 0)) && (0 != systemActive)) || (((methaneLevelCritical == 0) && (splverifierCounter == 0)) && (0 != systemActive))) - InvariantResult [Line: 64]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 345]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 134]: Location Invariant Derived location invariant: (((pumpRunning == \old(pumpRunning)) && (0 != systemActive)) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) - ProcedureContractResult [Line: 158]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((methaneLevelCritical == 0) && (0 != systemActive)) || ((pumpRunning == 0) && (0 != systemActive))) Ensures: ((((methaneLevelCritical == 0) && (0 != systemActive)) || ((pumpRunning == 0) && (0 != systemActive))) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head)))) - ProcedureContractResult [Line: 530]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: (0 != systemActive) Ensures: ((0 != systemActive) && (((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (head == \old(head)))) - ProcedureContractResult [Line: 542]: Procedure Contract for isMethaneLevelCritical Derived contract for procedure isMethaneLevelCritical. Requires: (0 != systemActive) Ensures: (((\result == methaneLevelCritical) && (0 != systemActive)) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head)))) - ProcedureContractResult [Line: 335]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((systemActive == \old(systemActive)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head)))) - ProcedureContractResult [Line: 134]: Procedure Contract for timeShift Derived contract for procedure timeShift. Requires: (0 != systemActive) Ensures: (((((((waterLevel != 1) || (pumpRunning == \old(pumpRunning))) || (methaneLevelCritical != 0)) && (((pumpRunning == 0) || ((waterLevel != 1) && (methaneLevelCritical == 0))) || ((pumpRunning == \old(pumpRunning)) && (methaneLevelCritical == 0)))) && (0 != systemActive)) && (((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || (waterLevel == 1))) && ((((systemActive == \old(systemActive)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head)))) - ProcedureContractResult [Line: 518]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((pumpRunning == 0) || (methaneLevelCritical == 0)) && (0 != systemActive)) Ensures: ((((pumpRunning == 0) || (methaneLevelCritical == 0)) && (0 != systemActive)) && (((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head)))) - ProcedureContractResult [Line: 166]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: (((methaneLevelCritical == 0) && (0 != systemActive)) || ((pumpRunning == 0) && (0 != systemActive))) Ensures: (((((methaneLevelCritical == 0) && (0 != systemActive)) || ((\old(pumpRunning) == 0) && (0 != systemActive))) && ((pumpRunning == \old(pumpRunning)) || ((waterLevel != 1) && (methaneLevelCritical == 0)))) && (((((systemActive == \old(systemActive)) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head)))) - ProcedureContractResult [Line: 250]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: (0 != systemActive) Ensures: (((\result == methaneLevelCritical) && (0 != systemActive)) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 07:22:31,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3fa6be-370e-4824-b37e-7ebacb47a554/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE