./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E --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 e7a194b3d6e079d2329a0d70eaa59b34ff3d58300de8b046ef1cd7cff7f67b94 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:57:05,900 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:57:05,964 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:57:05,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:57:05,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:57:05,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:57:05,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:57:05,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:57:05,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:57:05,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:57:05,995 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:57:05,995 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:57:05,995 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:57:05,995 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:57:05,995 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:57:05,995 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:57:05,996 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:57:05,996 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:57:05,996 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:57:05,996 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:57:05,996 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:57:05,996 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:57:05,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:57:05,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:57:05,997 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:57:05,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:57:05,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:57:05,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:57:05,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:57:05,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:57:05,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:57:05,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:57:05,998 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:57:05,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:57:05,998 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:57:05,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:57:05,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:57:05,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:57:05,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:57:05,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:57:05,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:57:06,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:57:06,000 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:57:06,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:57:06,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:57:06,000 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:57:06,000 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:57:06,000 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E 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 -> e7a194b3d6e079d2329a0d70eaa59b34ff3d58300de8b046ef1cd7cff7f67b94 [2024-11-14 04:57:06,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:57:06,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:57:06,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:57:06,377 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:57:06,378 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:57:06,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c Unable to find full path for "g++" [2024-11-14 04:57:08,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:57:08,766 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:57:08,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c [2024-11-14 04:57:08,788 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/data/8629c6ba3/0b98c2f40b0d45cca29c0bace0497bf2/FLAG133e235ca [2024-11-14 04:57:08,812 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/data/8629c6ba3/0b98c2f40b0d45cca29c0bace0497bf2 [2024-11-14 04:57:08,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:57:08,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:57:08,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:57:08,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:57:08,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:57:08,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:57:08" (1/1) ... [2024-11-14 04:57:08,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d2035c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:08, skipping insertion in model container [2024-11-14 04:57:08,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:57:08" (1/1) ... [2024-11-14 04:57:08,885 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:57:09,228 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_96c6f85f-790c-44c5-ad20-16001e3d4905/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c[17915,17928] [2024-11-14 04:57:09,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:57:09,266 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:57:09,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2024-11-14 04:57:09,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [415] [2024-11-14 04:57:09,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [653] [2024-11-14 04:57:09,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [691] [2024-11-14 04:57:09,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [759] [2024-11-14 04:57:09,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [810] [2024-11-14 04:57:09,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [907] [2024-11-14 04:57:09,279 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [916] [2024-11-14 04:57:09,339 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_96c6f85f-790c-44c5-ad20-16001e3d4905/sv-benchmarks/c/product-lines/minepump_spec5_product53.cil.c[17915,17928] [2024-11-14 04:57:09,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:57:09,365 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:57:09,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09 WrapperNode [2024-11-14 04:57:09,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:57:09,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:57:09,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:57:09,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:57:09,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (1/1) ... [2024-11-14 04:57:09,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (1/1) ... [2024-11-14 04:57:09,406 INFO L138 Inliner]: procedures = 58, calls = 105, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 232 [2024-11-14 04:57:09,406 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:57:09,407 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:57:09,407 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:57:09,407 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:57:09,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (1/1) ... [2024-11-14 04:57:09,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (1/1) ... [2024-11-14 04:57:09,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (1/1) ... [2024-11-14 04:57:09,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (1/1) ... [2024-11-14 04:57:09,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (1/1) ... [2024-11-14 04:57:09,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (1/1) ... [2024-11-14 04:57:09,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (1/1) ... [2024-11-14 04:57:09,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (1/1) ... [2024-11-14 04:57:09,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:57:09,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:57:09,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:57:09,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:57:09,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (1/1) ... [2024-11-14 04:57:09,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:57:09,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:57:09,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:57:09,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:57:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:57:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-14 04:57:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-14 04:57:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 04:57:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 04:57:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 04:57:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 04:57:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 04:57:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 04:57:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-14 04:57:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-14 04:57:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2024-11-14 04:57:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2024-11-14 04:57:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-14 04:57:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-14 04:57:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-14 04:57:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-14 04:57:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:57:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-14 04:57:09,535 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-14 04:57:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:57:09,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:57:09,671 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:57:09,673 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:57:10,037 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-14 04:57:10,038 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:57:10,188 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:57:10,189 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 04:57:10,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:57:10 BoogieIcfgContainer [2024-11-14 04:57:10,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:57:10,193 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:57:10,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:57:10,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:57:10,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:57:08" (1/3) ... [2024-11-14 04:57:10,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12eb033b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:57:10, skipping insertion in model container [2024-11-14 04:57:10,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:57:09" (2/3) ... [2024-11-14 04:57:10,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12eb033b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:57:10, skipping insertion in model container [2024-11-14 04:57:10,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:57:10" (3/3) ... [2024-11-14 04:57:10,201 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2024-11-14 04:57:10,218 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:57:10,219 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG minepump_spec5_product53.cil.c that has 10 procedures, 69 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 04:57:10,303 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:57:10,317 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;@23202709, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:57:10,317 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:57:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 52 states have internal predecessors, (60), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 04:57:10,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 04:57:10,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:10,331 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] [2024-11-14 04:57:10,332 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:10,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:10,337 INFO L85 PathProgramCache]: Analyzing trace with hash -668601718, now seen corresponding path program 1 times [2024-11-14 04:57:10,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:10,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117766979] [2024-11-14 04:57:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:10,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:57:10,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:10,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117766979] [2024-11-14 04:57:10,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117766979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:57:10,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:57:10,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:57:10,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945748021] [2024-11-14 04:57:10,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:57:10,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:57:10,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:10,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:57:10,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:57:10,527 INFO L87 Difference]: Start difference. First operand has 69 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 52 states have internal predecessors, (60), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:57:10,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:10,621 INFO L93 Difference]: Finished difference Result 136 states and 185 transitions. [2024-11-14 04:57:10,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:57:10,624 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-14 04:57:10,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:10,636 INFO L225 Difference]: With dead ends: 136 [2024-11-14 04:57:10,637 INFO L226 Difference]: Without dead ends: 64 [2024-11-14 04:57:10,643 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 [2024-11-14 04:57:10,648 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:10,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:57:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-14 04:57:10,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-14 04:57:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 48 states have internal predecessors, (52), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-14 04:57:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-11-14 04:57:10,709 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 21 [2024-11-14 04:57:10,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:10,709 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-11-14 04:57:10,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:57:10,710 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-11-14 04:57:10,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 04:57:10,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:10,712 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] [2024-11-14 04:57:10,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:57:10,712 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:10,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:10,715 INFO L85 PathProgramCache]: Analyzing trace with hash -469891969, now seen corresponding path program 1 times [2024-11-14 04:57:10,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:10,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592454728] [2024-11-14 04:57:10,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:10,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:57:10,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:10,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592454728] [2024-11-14 04:57:10,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592454728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:57:10,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:57:10,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:57:10,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119947965] [2024-11-14 04:57:10,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:57:10,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:57:10,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:10,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:57:10,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:57:10,941 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:57:11,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:11,016 INFO L93 Difference]: Finished difference Result 126 states and 167 transitions. [2024-11-14 04:57:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:57:11,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-14 04:57:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:11,018 INFO L225 Difference]: With dead ends: 126 [2024-11-14 04:57:11,019 INFO L226 Difference]: Without dead ends: 64 [2024-11-14 04:57:11,022 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 [2024-11-14 04:57:11,024 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:11,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 65 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:57:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-14 04:57:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-14 04:57:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 48 states have internal predecessors, (51), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-14 04:57:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2024-11-14 04:57:11,048 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 24 [2024-11-14 04:57:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:11,049 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2024-11-14 04:57:11,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:57:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2024-11-14 04:57:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 04:57:11,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:11,051 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] [2024-11-14 04:57:11,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:57:11,054 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:11,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:11,054 INFO L85 PathProgramCache]: Analyzing trace with hash -715052149, now seen corresponding path program 1 times [2024-11-14 04:57:11,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:11,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614314556] [2024-11-14 04:57:11,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:11,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:57:11,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:11,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614314556] [2024-11-14 04:57:11,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614314556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:57:11,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:57:11,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:57:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25526897] [2024-11-14 04:57:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:57:11,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:57:11,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:57:11,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:57:11,170 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 04:57:11,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:11,249 INFO L93 Difference]: Finished difference Result 105 states and 135 transitions. [2024-11-14 04:57:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:57:11,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-14 04:57:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:11,252 INFO L225 Difference]: With dead ends: 105 [2024-11-14 04:57:11,252 INFO L226 Difference]: Without dead ends: 56 [2024-11-14 04:57:11,252 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 [2024-11-14 04:57:11,253 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:11,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:57:11,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-14 04:57:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-14 04:57:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 43 states have internal predecessors, (45), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 04:57:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2024-11-14 04:57:11,267 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 28 [2024-11-14 04:57:11,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:11,268 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2024-11-14 04:57:11,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 04:57:11,268 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2024-11-14 04:57:11,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 04:57:11,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:11,269 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] [2024-11-14 04:57:11,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:57:11,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:11,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:11,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1555411999, now seen corresponding path program 1 times [2024-11-14 04:57:11,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:11,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441893529] [2024-11-14 04:57:11,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:11,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:57:11,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:11,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441893529] [2024-11-14 04:57:11,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441893529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:57:11,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:57:11,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:57:11,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381199469] [2024-11-14 04:57:11,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:57:11,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:57:11,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:11,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:57:11,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:57:11,437 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:57:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:11,556 INFO L93 Difference]: Finished difference Result 151 states and 197 transitions. [2024-11-14 04:57:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:57:11,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-14 04:57:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:11,559 INFO L225 Difference]: With dead ends: 151 [2024-11-14 04:57:11,560 INFO L226 Difference]: Without dead ends: 97 [2024-11-14 04:57:11,560 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 [2024-11-14 04:57:11,561 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 44 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:11,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 118 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:57:11,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-14 04:57:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-11-14 04:57:11,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 69 states have internal predecessors, (77), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (24), 16 states have call predecessors, (24), 18 states have call successors, (24) [2024-11-14 04:57:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 119 transitions. [2024-11-14 04:57:11,593 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 119 transitions. Word has length 30 [2024-11-14 04:57:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:11,595 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 119 transitions. [2024-11-14 04:57:11,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:57:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 119 transitions. [2024-11-14 04:57:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 04:57:11,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:11,598 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] [2024-11-14 04:57:11,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:57:11,598 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:11,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:11,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1242273054, now seen corresponding path program 1 times [2024-11-14 04:57:11,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:11,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867762725] [2024-11-14 04:57:11,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:11,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:57:12,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:12,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867762725] [2024-11-14 04:57:12,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867762725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:57:12,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:57:12,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:57:12,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015212157] [2024-11-14 04:57:12,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:57:12,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:57:12,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:12,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:57:12,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:57:12,031 INFO L87 Difference]: Start difference. First operand 95 states and 119 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 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) [2024-11-14 04:57:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:12,297 INFO L93 Difference]: Finished difference Result 277 states and 346 transitions. [2024-11-14 04:57:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:57:12,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 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 37 [2024-11-14 04:57:12,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:12,301 INFO L225 Difference]: With dead ends: 277 [2024-11-14 04:57:12,303 INFO L226 Difference]: Without dead ends: 184 [2024-11-14 04:57:12,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:57:12,305 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 119 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:12,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 174 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:57:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-14 04:57:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 176. [2024-11-14 04:57:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 113 states have (on average 1.238938053097345) internal successors, (140), 125 states have internal predecessors, (140), 33 states have call successors, (33), 28 states have call predecessors, (33), 29 states have return successors, (45), 30 states have call predecessors, (45), 33 states have call successors, (45) [2024-11-14 04:57:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 218 transitions. [2024-11-14 04:57:12,364 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 218 transitions. Word has length 37 [2024-11-14 04:57:12,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:12,365 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 218 transitions. [2024-11-14 04:57:12,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 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) [2024-11-14 04:57:12,366 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 218 transitions. [2024-11-14 04:57:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 04:57:12,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:12,370 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] [2024-11-14 04:57:12,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:57:12,370 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:12,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:12,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1683823775, now seen corresponding path program 1 times [2024-11-14 04:57:12,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:12,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381755067] [2024-11-14 04:57:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:12,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:57:12,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:12,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381755067] [2024-11-14 04:57:12,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381755067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:57:12,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:57:12,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 04:57:12,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238507533] [2024-11-14 04:57:12,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:57:12,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:57:12,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:12,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:57:12,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:57:12,932 INFO L87 Difference]: Start difference. First operand 176 states and 218 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:57:13,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:13,644 INFO L93 Difference]: Finished difference Result 410 states and 518 transitions. [2024-11-14 04:57:13,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:57:13,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 40 [2024-11-14 04:57:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:13,649 INFO L225 Difference]: With dead ends: 410 [2024-11-14 04:57:13,651 INFO L226 Difference]: Without dead ends: 290 [2024-11-14 04:57:13,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-14 04:57:13,654 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 191 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:13,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 266 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:57:13,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-14 04:57:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 261. [2024-11-14 04:57:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 172 states have (on average 1.244186046511628) internal successors, (214), 189 states have internal predecessors, (214), 46 states have call successors, (46), 35 states have call predecessors, (46), 42 states have return successors, (65), 47 states have call predecessors, (65), 46 states have call successors, (65) [2024-11-14 04:57:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 325 transitions. [2024-11-14 04:57:13,754 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 325 transitions. Word has length 40 [2024-11-14 04:57:13,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:13,755 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 325 transitions. [2024-11-14 04:57:13,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 04:57:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 325 transitions. [2024-11-14 04:57:13,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 04:57:13,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:13,756 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] [2024-11-14 04:57:13,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:57:13,757 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:13,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:13,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1641303854, now seen corresponding path program 1 times [2024-11-14 04:57:13,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:13,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026571686] [2024-11-14 04:57:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:13,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:57:13,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:13,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026571686] [2024-11-14 04:57:13,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026571686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:57:13,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:57:13,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:57:13,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209958666] [2024-11-14 04:57:13,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:57:13,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:57:13,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:13,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:57:13,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:57:13,979 INFO L87 Difference]: Start difference. First operand 261 states and 325 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:57:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:14,483 INFO L93 Difference]: Finished difference Result 537 states and 674 transitions. [2024-11-14 04:57:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 04:57:14,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-11-14 04:57:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:14,487 INFO L225 Difference]: With dead ends: 537 [2024-11-14 04:57:14,487 INFO L226 Difference]: Without dead ends: 278 [2024-11-14 04:57:14,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-14 04:57:14,489 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 66 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:14,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 255 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:57:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-14 04:57:14,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2024-11-14 04:57:14,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 176 states have (on average 1.2102272727272727) internal successors, (213), 193 states have internal predecessors, (213), 47 states have call successors, (47), 35 states have call predecessors, (47), 44 states have return successors, (70), 50 states have call predecessors, (70), 47 states have call successors, (70) [2024-11-14 04:57:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 330 transitions. [2024-11-14 04:57:14,558 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 330 transitions. Word has length 40 [2024-11-14 04:57:14,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:14,558 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 330 transitions. [2024-11-14 04:57:14,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-14 04:57:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 330 transitions. [2024-11-14 04:57:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-14 04:57:14,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:14,562 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:57:14,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 04:57:14,562 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:14,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash 97021997, now seen corresponding path program 1 times [2024-11-14 04:57:14,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:14,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140020744] [2024-11-14 04:57:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:14,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 04:57:14,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:14,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140020744] [2024-11-14 04:57:14,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140020744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:57:14,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026824125] [2024-11-14 04:57:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:14,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:57:14,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:57:14,761 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:57:14,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:57:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:14,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:57:14,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:57:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:57:15,023 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:57:15,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026824125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:57:15,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:57:15,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-14 04:57:15,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040396657] [2024-11-14 04:57:15,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:57:15,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:57:15,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:15,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:57:15,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:57:15,025 INFO L87 Difference]: Start difference. First operand 268 states and 330 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 04:57:15,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:15,132 INFO L93 Difference]: Finished difference Result 405 states and 503 transitions. [2024-11-14 04:57:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:57:15,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 70 [2024-11-14 04:57:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:15,135 INFO L225 Difference]: With dead ends: 405 [2024-11-14 04:57:15,135 INFO L226 Difference]: Without dead ends: 258 [2024-11-14 04:57:15,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:57:15,137 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 35 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:15,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 119 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:57:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-14 04:57:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-11-14 04:57:15,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 169 states have (on average 1.1775147928994083) internal successors, (199), 185 states have internal predecessors, (199), 45 states have call successors, (45), 35 states have call predecessors, (45), 43 states have return successors, (56), 48 states have call predecessors, (56), 45 states have call successors, (56) [2024-11-14 04:57:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 300 transitions. [2024-11-14 04:57:15,180 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 300 transitions. Word has length 70 [2024-11-14 04:57:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:15,181 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 300 transitions. [2024-11-14 04:57:15,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 04:57:15,181 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 300 transitions. [2024-11-14 04:57:15,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 04:57:15,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:15,183 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-14 04:57:15,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:57:15,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:57:15,387 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:15,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash -955260949, now seen corresponding path program 1 times [2024-11-14 04:57:15,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:15,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803763190] [2024-11-14 04:57:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:15,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:57:15,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:15,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803763190] [2024-11-14 04:57:15,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803763190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:57:15,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631146526] [2024-11-14 04:57:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:15,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:57:15,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:57:15,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:57:15,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:57:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:15,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:57:15,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:57:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:57:15,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:57:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:57:16,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631146526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:57:16,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [969467691] [2024-11-14 04:57:16,254 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2024-11-14 04:57:16,254 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:57:16,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:57:16,263 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:57:16,264 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:57:22,810 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 39 for LOIs [2024-11-14 04:57:22,821 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 10 for LOIs [2024-11-14 04:57:22,936 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 33 for LOIs [2024-11-14 04:57:23,000 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 36 for LOIs [2024-11-14 04:57:23,061 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 1 for LOIs [2024-11-14 04:57:23,062 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 24 for LOIs [2024-11-14 04:57:23,066 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:57:26,094 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5925#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (not (= 2 ~waterLevel~0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 04:57:26,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:57:26,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:57:26,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 15 [2024-11-14 04:57:26,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977181235] [2024-11-14 04:57:26,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:57:26,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 04:57:26,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:26,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 04:57:26,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2024-11-14 04:57:26,098 INFO L87 Difference]: Start difference. First operand 258 states and 300 transitions. Second operand has 15 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 7 states have call successors, (23), 4 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-14 04:57:26,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:26,847 INFO L93 Difference]: Finished difference Result 338 states and 403 transitions. [2024-11-14 04:57:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 04:57:26,847 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 7 states have call successors, (23), 4 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-11-14 04:57:26,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:26,852 INFO L225 Difference]: With dead ends: 338 [2024-11-14 04:57:26,853 INFO L226 Difference]: Without dead ends: 336 [2024-11-14 04:57:26,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 186 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=366, Invalid=3294, Unknown=0, NotChecked=0, Total=3660 [2024-11-14 04:57:26,856 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 143 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:26,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 565 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:57:26,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-14 04:57:26,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 294. [2024-11-14 04:57:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 190 states have (on average 1.168421052631579) internal successors, (222), 211 states have internal predecessors, (222), 53 states have call successors, (53), 43 states have call predecessors, (53), 50 states have return successors, (68), 54 states have call predecessors, (68), 53 states have call successors, (68) [2024-11-14 04:57:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 343 transitions. [2024-11-14 04:57:26,903 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 343 transitions. Word has length 74 [2024-11-14 04:57:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:26,903 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 343 transitions. [2024-11-14 04:57:26,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 7 states have call successors, (23), 4 states have call predecessors, (23), 8 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-14 04:57:26,904 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 343 transitions. [2024-11-14 04:57:26,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-14 04:57:26,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:26,905 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:57:26,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:57:27,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:57:27,111 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:27,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:27,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1394080644, now seen corresponding path program 1 times [2024-11-14 04:57:27,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:27,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238500868] [2024-11-14 04:57:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:27,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-14 04:57:27,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:27,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238500868] [2024-11-14 04:57:27,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238500868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:57:27,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:57:27,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:57:27,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585857834] [2024-11-14 04:57:27,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:57:27,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:57:27,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:57:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:57:27,215 INFO L87 Difference]: Start difference. First operand 294 states and 343 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-14 04:57:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:27,455 INFO L93 Difference]: Finished difference Result 758 states and 891 transitions. [2024-11-14 04:57:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:57:27,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2024-11-14 04:57:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:27,460 INFO L225 Difference]: With dead ends: 758 [2024-11-14 04:57:27,460 INFO L226 Difference]: Without dead ends: 584 [2024-11-14 04:57:27,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:57:27,462 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 118 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:27,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 214 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:57:27,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-14 04:57:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2024-11-14 04:57:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 377 states have (on average 1.1644562334217508) internal successors, (439), 416 states have internal predecessors, (439), 104 states have call successors, (104), 86 states have call predecessors, (104), 100 states have return successors, (134), 108 states have call predecessors, (134), 104 states have call successors, (134) [2024-11-14 04:57:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 677 transitions. [2024-11-14 04:57:27,523 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 677 transitions. Word has length 93 [2024-11-14 04:57:27,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:27,523 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 677 transitions. [2024-11-14 04:57:27,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-14 04:57:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 677 transitions. [2024-11-14 04:57:27,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-14 04:57:27,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:27,526 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 04:57:27,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 04:57:27,526 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:27,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:27,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1253825783, now seen corresponding path program 1 times [2024-11-14 04:57:27,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:27,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239632311] [2024-11-14 04:57:27,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:27,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-14 04:57:27,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:27,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239632311] [2024-11-14 04:57:27,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239632311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:57:27,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747403611] [2024-11-14 04:57:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:27,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:57:27,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:57:27,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:57:27,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:57:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:27,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:57:27,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:57:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:57:28,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:57:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 04:57:28,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747403611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:57:28,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [640302165] [2024-11-14 04:57:28,468 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2024-11-14 04:57:28,468 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:57:28,469 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:57:28,469 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:57:28,469 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:57:31,119 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 11 for LOIs [2024-11-14 04:57:31,122 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 12 for LOIs [2024-11-14 04:57:31,212 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 11 for LOIs [2024-11-14 04:57:31,221 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 11 for LOIs [2024-11-14 04:57:31,230 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 5 for LOIs [2024-11-14 04:57:31,232 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 17 for LOIs [2024-11-14 04:57:31,234 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 23 for LOIs [2024-11-14 04:57:31,236 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:57:33,529 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9600#(and (not (= ~pumpRunning~0 0)) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= 2 ~waterLevel~0)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 04:57:33,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:57:33,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:57:33,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2024-11-14 04:57:33,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962215361] [2024-11-14 04:57:33,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:57:33,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 04:57:33,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:33,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 04:57:33,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=2440, Unknown=0, NotChecked=0, Total=2756 [2024-11-14 04:57:33,533 INFO L87 Difference]: Start difference. First operand 582 states and 677 transitions. Second operand has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-14 04:57:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:35,119 INFO L93 Difference]: Finished difference Result 1708 states and 2172 transitions. [2024-11-14 04:57:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-14 04:57:35,120 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) Word has length 96 [2024-11-14 04:57:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:35,128 INFO L225 Difference]: With dead ends: 1708 [2024-11-14 04:57:35,128 INFO L226 Difference]: Without dead ends: 1112 [2024-11-14 04:57:35,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 246 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=672, Invalid=5334, Unknown=0, NotChecked=0, Total=6006 [2024-11-14 04:57:35,133 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 304 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:35,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 447 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:57:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2024-11-14 04:57:35,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 730. [2024-11-14 04:57:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 473 states have (on average 1.1268498942917549) internal successors, (533), 516 states have internal predecessors, (533), 124 states have call successors, (124), 112 states have call predecessors, (124), 132 states have return successors, (164), 134 states have call predecessors, (164), 124 states have call successors, (164) [2024-11-14 04:57:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 821 transitions. [2024-11-14 04:57:35,241 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 821 transitions. Word has length 96 [2024-11-14 04:57:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:35,242 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 821 transitions. [2024-11-14 04:57:35,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-14 04:57:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 821 transitions. [2024-11-14 04:57:35,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-14 04:57:35,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:57:35,245 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:57:35,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:57:35,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 04:57:35,449 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:57:35,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:57:35,449 INFO L85 PathProgramCache]: Analyzing trace with hash -393078621, now seen corresponding path program 1 times [2024-11-14 04:57:35,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:57:35,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12837008] [2024-11-14 04:57:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:35,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:57:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-14 04:57:36,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:57:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12837008] [2024-11-14 04:57:36,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12837008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:57:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231200052] [2024-11-14 04:57:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:57:36,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:57:36,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:57:36,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:57:36,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:57:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:57:36,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 04:57:36,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:57:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:57:36,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:57:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 51 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-14 04:57:37,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231200052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:57:37,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [94118822] [2024-11-14 04:57:37,427 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2024-11-14 04:57:37,427 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:57:37,427 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:57:37,428 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:57:37,428 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:57:39,158 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 3 for LOIs [2024-11-14 04:57:39,161 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 10 for LOIs [2024-11-14 04:57:39,315 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 11 for LOIs [2024-11-14 04:57:39,329 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 11 for LOIs [2024-11-14 04:57:39,352 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 1 for LOIs [2024-11-14 04:57:39,353 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 15 for LOIs [2024-11-14 04:57:39,357 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 23 for LOIs [2024-11-14 04:57:39,360 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:57:41,152 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14042#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 1) (not (= 2 ~waterLevel~0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 04:57:41,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:57:41,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:57:41,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 33 [2024-11-14 04:57:41,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975950472] [2024-11-14 04:57:41,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:57:41,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-14 04:57:41,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:57:41,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-14 04:57:41,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=3502, Unknown=0, NotChecked=0, Total=3906 [2024-11-14 04:57:41,156 INFO L87 Difference]: Start difference. First operand 730 states and 821 transitions. Second operand has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 32 states have internal predecessors, (150), 18 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2024-11-14 04:57:44,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:57:44,661 INFO L93 Difference]: Finished difference Result 1792 states and 2079 transitions. [2024-11-14 04:57:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-14 04:57:44,662 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 32 states have internal predecessors, (150), 18 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) Word has length 101 [2024-11-14 04:57:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:57:44,664 INFO L225 Difference]: With dead ends: 1792 [2024-11-14 04:57:44,664 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 04:57:44,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 277 SyntacticMatches, 6 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4298 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1641, Invalid=11241, Unknown=0, NotChecked=0, Total=12882 [2024-11-14 04:57:44,672 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 1535 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 1241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:57:44,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 823 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1241 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 04:57:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 04:57:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 04:57:44,673 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) [2024-11-14 04:57:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 04:57:44,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2024-11-14 04:57:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:57:44,675 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 04:57:44,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 32 states have internal predecessors, (150), 18 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2024-11-14 04:57:44,675 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 04:57:44,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 04:57:44,679 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 04:57:44,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 04:57:44,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 04:57:44,885 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:57:44,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 04:57:56,660 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:57:56,679 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |old(~pumpRunning~0)| 1)) (.cse2 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse0 .cse1 (<= ~waterLevel~0 0) .cse2) (and .cse0 .cse1 (= ~waterLevel~0 1) .cse2))) (= ~pumpRunning~0 1)) Eliminated clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse0 (= ~waterLevel~0 1) .cse1) (and .cse0 (<= ~waterLevel~0 0) .cse1))) (= ~pumpRunning~0 1)) [2024-11-14 04:57:56,695 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse3 (= |old(~methaneLevelCritical~0)| 0)) (.cse4 (= ~methaneLevelCritical~0 0))) (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (<= 1 ~switchedOnBeforeTS~0)) (.cse1 (= ~pumpRunning~0 1))) (or (and (= ~pumpRunning~0 0) .cse0 (<= ~waterLevel~0 2)) (and (= 2 ~waterLevel~0) .cse0 .cse1) (and .cse0 (= ~waterLevel~0 1) .cse2 .cse1) (and .cse0 (<= ~waterLevel~0 0) .cse2 .cse1))) (or .cse3 (not .cse4)) (or (not .cse3) .cse4))) Eliminated clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (<= 1 ~switchedOnBeforeTS~0)) (.cse1 (= ~pumpRunning~0 1))) (or (and (= ~pumpRunning~0 0) .cse0 (<= ~waterLevel~0 2)) (and (= 2 ~waterLevel~0) .cse0 .cse1) (and .cse0 (= ~waterLevel~0 1) .cse2 .cse1) (and .cse0 (<= ~waterLevel~0 0) .cse2 .cse1))) (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse3 (= |old(~methaneLevelCritical~0)| 0)) (.cse4 (= ~methaneLevelCritical~0 0))) (and (or .cse3 (not .cse4)) (or (not .cse3) .cse4))))) [2024-11-14 04:57:56,701 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 04:57:56,710 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (< |old(~switchedOnBeforeTS~0)| 1) (<= 1 ~switchedOnBeforeTS~0)) (or (not .cse0) (and (= ~pumpRunning~0 0) .cse1)) (or (< |old(~pumpRunning~0)| 1) (and .cse1 (= ~pumpRunning~0 1))) (let ((.cse3 (= |old(~pumpRunning~0)| 1)) (.cse2 (= 1 ~systemActive~0)) (.cse4 (<= |old(~waterLevel~0)| 2))) (or (and .cse2 .cse3 (= |old(~waterLevel~0)| 2)) (and .cse2 .cse3 (<= 1 |old(~switchedOnBeforeTS~0)|) .cse4) (and .cse2 .cse0 .cse4))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~switchedOnBeforeTS~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (and (= ~pumpRunning~0 0) .cse1)) (or (< |old(~switchedOnBeforeTS~0)| 1) (< 0 ~switchedOnBeforeTS~0)) (or (< |old(~pumpRunning~0)| 1) (and .cse1 (= ~pumpRunning~0 1))) (let ((.cse3 (= |old(~pumpRunning~0)| 1)) (.cse2 (= 1 ~systemActive~0)) (.cse4 (<= |old(~waterLevel~0)| 2))) (or (and .cse2 .cse3 (= |old(~waterLevel~0)| 2)) (and .cse2 .cse3 (<= 1 |old(~switchedOnBeforeTS~0)|) .cse4) (and .cse2 .cse0 .cse4)))))) [2024-11-14 04:57:56,729 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 04:57:56,739 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3)))))) [2024-11-14 04:57:56,745 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 04:57:56,747 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (let ((.cse1 (<= |old(~waterLevel~0)| 2)) (.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 1))) (or (and .cse0 (<= 1 ~switchedOnBeforeTS~0) .cse1 .cse2) (and (= ~pumpRunning~0 0) .cse0 .cse1) (and .cse0 (= |old(~waterLevel~0)| 2) .cse2))) (= |old(~waterLevel~0)| ~waterLevel~0)) Eliminated clause: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (<= ~waterLevel~0 2)) (.cse2 (= ~pumpRunning~0 1))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1) (and (= 2 ~waterLevel~0) .cse0 .cse2) (and .cse0 .cse1 (<= 1 ~switchedOnBeforeTS~0) .cse2))) [2024-11-14 04:57:56,760 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__lowWaterSensor contained old-variable. Original clause: (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3)))))) [2024-11-14 04:57:56,763 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 04:57:56,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:57:56 BoogieIcfgContainer [2024-11-14 04:57:56,770 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:57:56,771 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:57:56,771 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:57:56,771 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:57:56,772 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:57:10" (3/4) ... [2024-11-14 04:57:56,774 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 04:57:56,777 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-14 04:57:56,777 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-14 04:57:56,777 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-14 04:57:56,777 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-14 04:57:56,778 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-14 04:57:56,778 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 04:57:56,778 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-14 04:57:56,778 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__lowWaterSensor [2024-11-14 04:57:56,778 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-11-14 04:57:56,784 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 48 nodes and edges [2024-11-14 04:57:56,785 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-14 04:57:56,785 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-14 04:57:56,786 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:57:56,786 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:57:56,890 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:57:56,890 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 04:57:56,891 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:57:56,892 INFO L158 Benchmark]: Toolchain (without parser) took 48073.42ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 117.6MB in the beginning and 860.6MB in the end (delta: -743.0MB). Peak memory consumption was 660.7MB. Max. memory is 16.1GB. [2024-11-14 04:57:56,893 INFO L158 Benchmark]: CDTParser took 1.05ms. Allocated memory is still 142.6MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:57:56,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 545.81ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 98.4MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:57:56,893 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.53ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 96.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:57:56,894 INFO L158 Benchmark]: Boogie Preprocessor took 45.11ms. Allocated memory is still 142.6MB. Free memory was 96.5MB in the beginning and 95.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:57:56,894 INFO L158 Benchmark]: RCFGBuilder took 737.37ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 65.8MB in the end (delta: 29.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-14 04:57:56,895 INFO L158 Benchmark]: TraceAbstraction took 46577.76ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 65.3MB in the beginning and 869.0MB in the end (delta: -803.7MB). Peak memory consumption was 887.4MB. Max. memory is 16.1GB. [2024-11-14 04:57:56,895 INFO L158 Benchmark]: Witness Printer took 119.97ms. Allocated memory is still 1.6GB. Free memory was 869.0MB in the beginning and 860.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:57:56,898 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.05ms. Allocated memory is still 142.6MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 545.81ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 98.4MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.53ms. Allocated memory is still 142.6MB. Free memory was 98.4MB in the beginning and 96.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.11ms. Allocated memory is still 142.6MB. Free memory was 96.5MB in the beginning and 95.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 737.37ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 65.8MB in the end (delta: 29.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 46577.76ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 65.3MB in the beginning and 869.0MB in the end (delta: -803.7MB). Peak memory consumption was 887.4MB. Max. memory is 16.1GB. * Witness Printer took 119.97ms. Allocated memory is still 1.6GB. Free memory was 869.0MB in the beginning and 860.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [415] - GenericResultAtLocation [Line: 653]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [653] - GenericResultAtLocation [Line: 691]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [691] - GenericResultAtLocation [Line: 759]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [759] - GenericResultAtLocation [Line: 810]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [810] - GenericResultAtLocation [Line: 907]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [907] - GenericResultAtLocation [Line: 916]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [916] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 912]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.6s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2656 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2632 mSDsluCounter, 3220 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2295 mSDsCounter, 1693 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4747 IncrementalHoareTripleChecker+Invalid, 6440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1693 mSolverCounterUnsat, 925 mSDtfsCounter, 4747 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1112 GetRequests, 807 SyntacticMatches, 16 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 7629 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=730occurred in iteration=11, InterpolantAutomatonStates: 152, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 475 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 995 NumberOfCodeBlocks, 995 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1247 ConstructedInterpolants, 0 QuantifiedInterpolants, 3454 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1244 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 571/688 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: 705]: Loop Invariant Derived loop invariant: ((((((((((((((1 == systemActive) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1)) || (((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0))) || (((((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) || (((((2 == waterLevel) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (pumpRunning == 1))) || ((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) || ((((((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((((1 == systemActive) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || (((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (waterLevel <= 1)) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 704]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 822]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 551]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: (((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) || (((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS))) && (pumpRunning == 1)) Ensures: (((pumpRunning == 0) && (((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)))) && ((((((head == \old(head)) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 458]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) Ensures: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) && (((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 943]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) Ensures: (((((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) && ((methaneLevelCritical == 0) || (\old(methaneLevelCritical) == 0))) && ((\old(methaneLevelCritical) != 0) || (methaneLevelCritical != 0))) && ((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel)))) - ProcedureContractResult [Line: 812]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((head == \old(head)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 431]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: ((((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (\old(waterLevel) == 2)) || ((1 == systemActive) && (\old(pumpRunning) == 0))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (1 <= \old(switchedOnBeforeTS))) && (\old(waterLevel) <= 2))) && ((((((pumpRunning == 0) && (waterLevel <= 1)) && (\old(waterLevel) == waterLevel)) || (\old(pumpRunning) != 0)) || (((pumpRunning == 0) && (2 == waterLevel)) && (\old(waterLevel) == 2))) || (((2 == waterLevel) && (\old(waterLevel) == 2)) && (pumpRunning == 1)))) && (((\old(pumpRunning) < 1) || (((pumpRunning == 0) && (((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel)))) && (1 <= switchedOnBeforeTS))) || (((((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel))) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1)))) && ((((head == \old(head)) && (systemActive == \old(systemActive))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 466]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Ensures: (((((\old(pumpRunning) < 1) || (pumpRunning == 1)) && (((\old(pumpRunning) != 0) || (pumpRunning == 0)) || ((2 == waterLevel) && (pumpRunning == 1)))) && ((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (waterLevel <= 2))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)))) && ((((((head == \old(head)) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 931]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) Ensures: (((((((2 == waterLevel) || (\old(waterLevel) != 2)) && ((((((1 == systemActive) && (1 <= switchedOnBeforeTS)) && (\old(waterLevel) <= 2)) && (pumpRunning == 1)) || (((pumpRunning == 0) && (1 == systemActive)) && (\old(waterLevel) <= 2))) || (((1 == systemActive) && (\old(waterLevel) == 2)) && (pumpRunning == 1)))) && ((2 == waterLevel) || (\old(waterLevel) != 1))) && (((0 < \old(waterLevel)) || (pumpRunning != 1)) || (waterLevel < 2))) && (waterLevel <= 2)) && ((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 492]: Procedure Contract for processEnvironment__wrappee__lowWaterSensor Derived contract for procedure processEnvironment__wrappee__lowWaterSensor. Ensures: ((((((\old(pumpRunning) != 0) || (pumpRunning == 0)) || (2 == waterLevel)) && ((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (waterLevel <= 2))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)))) && ((pumpRunning == 0) || (pumpRunning == 1))) && ((((((head == \old(head)) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 570]: Procedure Contract for isPumpRunning Derived contract for procedure isPumpRunning. Requires: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) Ensures: ((((((\result == 1) && (1 == systemActive)) || (pumpRunning != 1)) && ((pumpRunning != 0) || (\result == 0))) && ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((waterLevel == 1) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((2 == waterLevel) && (pumpRunning == 1))) || (((waterLevel <= 0) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1)))) && (((((((head == \old(head)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) RESULT: Ultimate proved your program to be correct! [2024-11-14 04:57:56,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96c6f85f-790c-44c5-ad20-16001e3d4905/bin/utaipan-verify-sOmjnqqW8E/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