./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5 --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 ba9a436826b937f0c5d07c40f29a0f312221efc7ce174fd7c7535766b753ea6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:36:11,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:36:11,289 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 19:36:11,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:36:11,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:36:11,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:36:11,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:36:11,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:36:11,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:36:11,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:36:11,358 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:36:11,359 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:36:11,359 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:36:11,361 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:36:11,362 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:36:11,362 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:36:11,363 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:36:11,363 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:36:11,364 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:36:11,364 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:36:11,366 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:36:11,367 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:36:11,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:36:11,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:36:11,369 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:36:11,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:36:11,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:36:11,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:36:11,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:36:11,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:36:11,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:36:11,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:36:11,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:36:11,374 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:36:11,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:36:11,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:36:11,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:36:11,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:36:11,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:36:11,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:36:11,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:36:11,377 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:36:11,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:36:11,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:36:11,378 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:36:11,378 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:36:11,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:36:11,379 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba9a436826b937f0c5d07c40f29a0f312221efc7ce174fd7c7535766b753ea6d [2023-11-21 19:36:11,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:36:11,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:36:11,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:36:11,778 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:36:11,779 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:36:11,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2023-11-21 19:36:14,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:36:15,268 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:36:15,269 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2023-11-21 19:36:15,298 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/data/f339d92e2/b377040270d541b0b8ed8f818a5ae209/FLAG70f6347dc [2023-11-21 19:36:15,314 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/data/f339d92e2/b377040270d541b0b8ed8f818a5ae209 [2023-11-21 19:36:15,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:36:15,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:36:15,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:36:15,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:36:15,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:36:15,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a595895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15, skipping insertion in model container [2023-11-21 19:36:15,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,381 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:36:15,590 WARN L240 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_e61a9747-9a60-4b32-a945-bec3a84e4594/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[5266,5279] [2023-11-21 19:36:15,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:36:15,705 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:36:15,714 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [49] [2023-11-21 19:36:15,716 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [118] [2023-11-21 19:36:15,716 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [322] [2023-11-21 19:36:15,716 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [331] [2023-11-21 19:36:15,717 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [697] [2023-11-21 19:36:15,717 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [724] [2023-11-21 19:36:15,717 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [823] [2023-11-21 19:36:15,717 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [917] [2023-11-21 19:36:15,740 WARN L240 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_e61a9747-9a60-4b32-a945-bec3a84e4594/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[5266,5279] [2023-11-21 19:36:15,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:36:15,851 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:36:15,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15 WrapperNode [2023-11-21 19:36:15,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:36:15,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:36:15,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:36:15,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:36:15,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,899 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,932 INFO L138 Inliner]: procedures = 54, calls = 99, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 206 [2023-11-21 19:36:15,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:36:15,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:36:15,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:36:15,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:36:15,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,962 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,964 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:15,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:36:15,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:36:15,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:36:15,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:36:15,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (1/1) ... [2023-11-21 19:36:16,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:36:16,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:36:16,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:36:16,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:36:16,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:36:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-21 19:36:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-21 19:36:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 19:36:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 19:36:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 19:36:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 19:36:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-21 19:36:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-21 19:36:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-11-21 19:36:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-11-21 19:36:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-11-21 19:36:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-11-21 19:36:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:36:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-21 19:36:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-21 19:36:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:36:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:36:16,180 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:36:16,183 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:36:16,534 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:36:16,753 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:36:16,754 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 19:36:16,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:36:16 BoogieIcfgContainer [2023-11-21 19:36:16,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:36:16,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:36:16,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:36:16,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:36:16,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:36:15" (1/3) ... [2023-11-21 19:36:16,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d214d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:36:16, skipping insertion in model container [2023-11-21 19:36:16,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:36:15" (2/3) ... [2023-11-21 19:36:16,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d214d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:36:16, skipping insertion in model container [2023-11-21 19:36:16,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:36:16" (3/3) ... [2023-11-21 19:36:16,770 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2023-11-21 19:36:16,791 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:36:16,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:36:16,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:36:16,868 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@44a4edb3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:36:16,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:36:16,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-21 19:36:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:36:16,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:16,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:16,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:16,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:16,894 INFO L85 PathProgramCache]: Analyzing trace with hash 706846516, now seen corresponding path program 1 times [2023-11-21 19:36:16,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:16,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743363321] [2023-11-21 19:36:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:16,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:17,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:36:17,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743363321] [2023-11-21 19:36:17,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743363321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:17,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:17,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:36:17,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984635229] [2023-11-21 19:36:17,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:17,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:36:17,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:36:17,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:36:17,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:36:17,118 INFO L87 Difference]: Start difference. First operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:36:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:17,188 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2023-11-21 19:36:17,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:36:17,191 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-21 19:36:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:17,200 INFO L225 Difference]: With dead ends: 112 [2023-11-21 19:36:17,200 INFO L226 Difference]: Without dead ends: 52 [2023-11-21 19:36:17,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:36:17,208 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:17,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:36:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-21 19:36:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-21 19:36:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.303030303030303) internal successors, (43), 40 states have internal predecessors, (43), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-21 19:36:17,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2023-11-21 19:36:17,252 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 12 [2023-11-21 19:36:17,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:17,252 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2023-11-21 19:36:17,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:36:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2023-11-21 19:36:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 19:36:17,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:17,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:17,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:36:17,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:17,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:17,256 INFO L85 PathProgramCache]: Analyzing trace with hash -799333322, now seen corresponding path program 1 times [2023-11-21 19:36:17,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:17,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812866879] [2023-11-21 19:36:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:17,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:17,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:36:17,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812866879] [2023-11-21 19:36:17,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812866879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:17,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:17,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:36:17,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367689167] [2023-11-21 19:36:17,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:17,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:36:17,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:36:17,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:36:17,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:36:17,374 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:36:17,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:17,420 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-11-21 19:36:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:36:17,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-21 19:36:17,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:17,423 INFO L225 Difference]: With dead ends: 81 [2023-11-21 19:36:17,423 INFO L226 Difference]: Without dead ends: 44 [2023-11-21 19:36:17,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:36:17,426 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:17,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:36:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-21 19:36:17,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-21 19:36:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 19:36:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2023-11-21 19:36:17,436 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 13 [2023-11-21 19:36:17,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:17,437 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2023-11-21 19:36:17,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:36:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2023-11-21 19:36:17,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 19:36:17,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:17,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:17,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:36:17,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:17,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:17,440 INFO L85 PathProgramCache]: Analyzing trace with hash 199169726, now seen corresponding path program 1 times [2023-11-21 19:36:17,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:17,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273962697] [2023-11-21 19:36:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:17,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:17,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:36:17,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273962697] [2023-11-21 19:36:17,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273962697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:17,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:17,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:36:17,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352505353] [2023-11-21 19:36:17,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:17,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:36:17,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:36:17,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:36:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:36:17,572 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:36:17,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:17,610 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2023-11-21 19:36:17,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:36:17,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 19:36:17,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:17,612 INFO L225 Difference]: With dead ends: 86 [2023-11-21 19:36:17,612 INFO L226 Difference]: Without dead ends: 44 [2023-11-21 19:36:17,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:36:17,615 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:17,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:36:17,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-21 19:36:17,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-21 19:36:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 35 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 19:36:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2023-11-21 19:36:17,626 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 15 [2023-11-21 19:36:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:17,626 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2023-11-21 19:36:17,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:36:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2023-11-21 19:36:17,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-21 19:36:17,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:17,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:17,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:36:17,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:17,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:17,630 INFO L85 PathProgramCache]: Analyzing trace with hash 685855569, now seen corresponding path program 1 times [2023-11-21 19:36:17,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:17,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004680599] [2023-11-21 19:36:17,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:17,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:17,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:36:17,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004680599] [2023-11-21 19:36:17,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004680599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:17,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:17,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:36:17,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393565686] [2023-11-21 19:36:17,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:17,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:36:17,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:36:17,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:36:17,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:36:17,781 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:17,889 INFO L93 Difference]: Finished difference Result 118 states and 147 transitions. [2023-11-21 19:36:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:36:17,890 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-11-21 19:36:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:17,892 INFO L225 Difference]: With dead ends: 118 [2023-11-21 19:36:17,892 INFO L226 Difference]: Without dead ends: 76 [2023-11-21 19:36:17,893 INFO L412 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 [2023-11-21 19:36:17,895 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 33 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:17,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:36:17,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-21 19:36:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2023-11-21 19:36:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 56 states have internal predecessors, (61), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2023-11-21 19:36:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2023-11-21 19:36:17,922 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 22 [2023-11-21 19:36:17,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:17,922 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2023-11-21 19:36:17,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:36:17,923 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2023-11-21 19:36:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-21 19:36:17,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:17,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:17,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:36:17,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:17,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1970980335, now seen corresponding path program 1 times [2023-11-21 19:36:17,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:17,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175124458] [2023-11-21 19:36:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:17,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:18,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:36:18,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175124458] [2023-11-21 19:36:18,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175124458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:18,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:18,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:36:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040169364] [2023-11-21 19:36:18,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:18,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:36:18,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:36:18,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:36:18,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:36:18,257 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 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) [2023-11-21 19:36:18,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:18,453 INFO L93 Difference]: Finished difference Result 201 states and 242 transitions. [2023-11-21 19:36:18,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:36:18,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 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 26 [2023-11-21 19:36:18,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:18,457 INFO L225 Difference]: With dead ends: 201 [2023-11-21 19:36:18,457 INFO L226 Difference]: Without dead ends: 129 [2023-11-21 19:36:18,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:36:18,460 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 49 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:18,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 145 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:36:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-21 19:36:18,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2023-11-21 19:36:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 86 states have internal predecessors, (91), 18 states have call successors, (18), 18 states have call predecessors, (18), 20 states have return successors, (24), 19 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-21 19:36:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2023-11-21 19:36:18,487 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 26 [2023-11-21 19:36:18,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:18,487 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2023-11-21 19:36:18,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 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) [2023-11-21 19:36:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2023-11-21 19:36:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-21 19:36:18,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:18,490 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 19:36:18,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:36:18,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:18,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:18,492 INFO L85 PathProgramCache]: Analyzing trace with hash 957732786, now seen corresponding path program 1 times [2023-11-21 19:36:18,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:18,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500142693] [2023-11-21 19:36:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:18,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 19:36:18,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:36:18,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500142693] [2023-11-21 19:36:18,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500142693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:18,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:36:18,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 19:36:18,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742220465] [2023-11-21 19:36:18,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:18,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:36:18,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:36:18,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:36:18,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:36:18,639 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 19:36:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:18,843 INFO L93 Difference]: Finished difference Result 301 states and 356 transitions. [2023-11-21 19:36:18,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:36:18,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-11-21 19:36:18,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:18,847 INFO L225 Difference]: With dead ends: 301 [2023-11-21 19:36:18,848 INFO L226 Difference]: Without dead ends: 229 [2023-11-21 19:36:18,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:36:18,850 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 36 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:18,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 180 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:36:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-21 19:36:18,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 217. [2023-11-21 19:36:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 161 states have internal predecessors, (175), 33 states have call successors, (33), 33 states have call predecessors, (33), 37 states have return successors, (45), 35 states have call predecessors, (45), 33 states have call successors, (45) [2023-11-21 19:36:18,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 253 transitions. [2023-11-21 19:36:18,899 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 253 transitions. Word has length 47 [2023-11-21 19:36:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:18,900 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 253 transitions. [2023-11-21 19:36:18,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 19:36:18,900 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 253 transitions. [2023-11-21 19:36:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-21 19:36:18,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:18,904 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 19:36:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:36:18,905 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:18,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash 364006996, now seen corresponding path program 1 times [2023-11-21 19:36:18,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:18,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540102966] [2023-11-21 19:36:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:36:19,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:36:19,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540102966] [2023-11-21 19:36:19,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540102966] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:36:19,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196842785] [2023-11-21 19:36:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:19,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:36:19,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:36:19,422 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:36:19,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:36:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:19,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 19:36:19,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:20,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:36:20,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196842785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:20,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:36:20,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2023-11-21 19:36:20,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422127237] [2023-11-21 19:36:20,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:20,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 19:36:20,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:36:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 19:36:20,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-21 19:36:20,241 INFO L87 Difference]: Start difference. First operand 217 states and 253 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-21 19:36:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:20,852 INFO L93 Difference]: Finished difference Result 483 states and 585 transitions. [2023-11-21 19:36:20,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 19:36:20,856 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2023-11-21 19:36:20,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:20,865 INFO L225 Difference]: With dead ends: 483 [2023-11-21 19:36:20,866 INFO L226 Difference]: Without dead ends: 325 [2023-11-21 19:36:20,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2023-11-21 19:36:20,874 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 137 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:20,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 119 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 19:36:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-21 19:36:20,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 292. [2023-11-21 19:36:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 204 states have (on average 1.196078431372549) internal successors, (244), 217 states have internal predecessors, (244), 43 states have call successors, (43), 43 states have call predecessors, (43), 44 states have return successors, (60), 40 states have call predecessors, (60), 43 states have call successors, (60) [2023-11-21 19:36:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 347 transitions. [2023-11-21 19:36:20,951 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 347 transitions. Word has length 50 [2023-11-21 19:36:20,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:20,952 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 347 transitions. [2023-11-21 19:36:20,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-21 19:36:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 347 transitions. [2023-11-21 19:36:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-21 19:36:20,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:20,956 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 19:36:20,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:21,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:36:21,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:21,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:21,174 INFO L85 PathProgramCache]: Analyzing trace with hash -798308888, now seen corresponding path program 1 times [2023-11-21 19:36:21,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:21,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073242875] [2023-11-21 19:36:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:21,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:36:21,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:36:21,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073242875] [2023-11-21 19:36:21,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073242875] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:36:21,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112947107] [2023-11-21 19:36:21,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:21,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:36:21,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:36:21,600 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:36:21,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:36:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:21,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 19:36:21,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:36:22,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:36:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 19:36:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112947107] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:36:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [125977139] [2023-11-21 19:36:22,813 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-11-21 19:36:22,813 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:36:22,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:36:22,825 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:36:22,826 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:36:26,055 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 17 for LOIs [2023-11-21 19:36:26,061 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2023-11-21 19:36:26,347 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 27 for LOIs [2023-11-21 19:36:26,488 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 32 for LOIs [2023-11-21 19:36:26,514 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 32 for LOIs [2023-11-21 19:36:26,531 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:36:29,790 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3594#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1| 0)) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~8#1| 0) (<= 0 ~methaneLevelCritical~0) (<= ~methaneLevelCritical~0 2147483647) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-11-21 19:36:29,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:36:29,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:36:29,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 26 [2023-11-21 19:36:29,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463399257] [2023-11-21 19:36:29,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:36:29,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 19:36:29,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:36:29,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 19:36:29,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=3060, Unknown=0, NotChecked=0, Total=3422 [2023-11-21 19:36:29,797 INFO L87 Difference]: Start difference. First operand 292 states and 347 transitions. Second operand has 26 states, 22 states have (on average 4.318181818181818) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-21 19:36:34,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:34,937 INFO L93 Difference]: Finished difference Result 1332 states and 1756 transitions. [2023-11-21 19:36:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-21 19:36:34,938 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.318181818181818) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) Word has length 53 [2023-11-21 19:36:34,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:34,954 INFO L225 Difference]: With dead ends: 1332 [2023-11-21 19:36:34,954 INFO L226 Difference]: Without dead ends: 1146 [2023-11-21 19:36:34,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 121 SyntacticMatches, 8 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8078 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3114, Invalid=18056, Unknown=0, NotChecked=0, Total=21170 [2023-11-21 19:36:34,968 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1257 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 952 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 2519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 952 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:34,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 363 Invalid, 2519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [952 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-21 19:36:34,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2023-11-21 19:36:35,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 763. [2023-11-21 19:36:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 538 states have (on average 1.1691449814126393) internal successors, (629), 572 states have internal predecessors, (629), 111 states have call successors, (111), 103 states have call predecessors, (111), 113 states have return successors, (159), 110 states have call predecessors, (159), 111 states have call successors, (159) [2023-11-21 19:36:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 899 transitions. [2023-11-21 19:36:35,119 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 899 transitions. Word has length 53 [2023-11-21 19:36:35,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:35,122 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 899 transitions. [2023-11-21 19:36:35,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.318181818181818) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) [2023-11-21 19:36:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 899 transitions. [2023-11-21 19:36:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-21 19:36:35,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:35,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:35,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:35,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:36:35,346 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:35,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:35,347 INFO L85 PathProgramCache]: Analyzing trace with hash -891943655, now seen corresponding path program 1 times [2023-11-21 19:36:35,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:35,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702172382] [2023-11-21 19:36:35,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:35,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-21 19:36:35,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:36:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702172382] [2023-11-21 19:36:35,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702172382] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:36:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253290587] [2023-11-21 19:36:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:35,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:36:35,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:36:35,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:36:35,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:36:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:35,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 19:36:35,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-21 19:36:35,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:36:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253290587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:36:35,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:36:35,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2023-11-21 19:36:35,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169550077] [2023-11-21 19:36:35,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:36:35,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:36:35,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:36:35,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:36:35,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-21 19:36:35,890 INFO L87 Difference]: Start difference. First operand 763 states and 899 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-21 19:36:36,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:36,039 INFO L93 Difference]: Finished difference Result 794 states and 934 transitions. [2023-11-21 19:36:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:36:36,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 81 [2023-11-21 19:36:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:36,047 INFO L225 Difference]: With dead ends: 794 [2023-11-21 19:36:36,047 INFO L226 Difference]: Without dead ends: 792 [2023-11-21 19:36:36,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-21 19:36:36,052 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 40 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:36,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 107 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:36:36,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2023-11-21 19:36:36,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 763. [2023-11-21 19:36:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 538 states have (on average 1.1598513011152416) internal successors, (624), 572 states have internal predecessors, (624), 111 states have call successors, (111), 103 states have call predecessors, (111), 113 states have return successors, (159), 110 states have call predecessors, (159), 111 states have call successors, (159) [2023-11-21 19:36:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 894 transitions. [2023-11-21 19:36:36,159 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 894 transitions. Word has length 81 [2023-11-21 19:36:36,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:36,160 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 894 transitions. [2023-11-21 19:36:36,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-21 19:36:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 894 transitions. [2023-11-21 19:36:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-21 19:36:36,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:36,166 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:36,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:36,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-21 19:36:36,390 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:36,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1211728182, now seen corresponding path program 1 times [2023-11-21 19:36:36,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:36,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274332427] [2023-11-21 19:36:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-21 19:36:36,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:36:36,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274332427] [2023-11-21 19:36:36,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274332427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:36:36,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232540778] [2023-11-21 19:36:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:36,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:36:36,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:36:36,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:36:36,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:36:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:36:36,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 19:36:36,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:36:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 15 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-21 19:36:37,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:36:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-21 19:36:38,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232540778] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:36:38,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1031308621] [2023-11-21 19:36:38,203 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-11-21 19:36:38,204 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:36:38,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:36:38,204 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:36:38,204 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:36:41,400 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 141 for LOIs [2023-11-21 19:36:41,527 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 24 for LOIs [2023-11-21 19:36:41,687 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 36 for LOIs [2023-11-21 19:36:41,892 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 42 for LOIs [2023-11-21 19:36:41,930 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 11 for LOIs [2023-11-21 19:36:41,932 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:36:46,662 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9409#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1| 0)) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~8#1| 0) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-11-21 19:36:46,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:36:46,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:36:46,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 12] total 28 [2023-11-21 19:36:46,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502391250] [2023-11-21 19:36:46,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:36:46,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-21 19:36:46,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:36:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-21 19:36:46,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=3421, Unknown=0, NotChecked=0, Total=3782 [2023-11-21 19:36:46,667 INFO L87 Difference]: Start difference. First operand 763 states and 894 transitions. Second operand has 28 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 14 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (26), 14 states have call predecessors, (26), 14 states have call successors, (26) [2023-11-21 19:36:53,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:36:53,423 INFO L93 Difference]: Finished difference Result 1672 states and 2055 transitions. [2023-11-21 19:36:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-11-21 19:36:53,424 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 14 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (26), 14 states have call predecessors, (26), 14 states have call successors, (26) Word has length 83 [2023-11-21 19:36:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:36:53,433 INFO L225 Difference]: With dead ends: 1672 [2023-11-21 19:36:53,434 INFO L226 Difference]: Without dead ends: 1151 [2023-11-21 19:36:53,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 231 SyntacticMatches, 7 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11233 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=4192, Invalid=27670, Unknown=0, NotChecked=0, Total=31862 [2023-11-21 19:36:53,448 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1400 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 1009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:36:53,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 503 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1009 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-21 19:36:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2023-11-21 19:36:53,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 850. [2023-11-21 19:36:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 590 states have (on average 1.147457627118644) internal successors, (677), 625 states have internal predecessors, (677), 129 states have call successors, (129), 126 states have call predecessors, (129), 130 states have return successors, (168), 126 states have call predecessors, (168), 129 states have call successors, (168) [2023-11-21 19:36:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 974 transitions. [2023-11-21 19:36:53,604 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 974 transitions. Word has length 83 [2023-11-21 19:36:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:36:53,605 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 974 transitions. [2023-11-21 19:36:53,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 14 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (26), 14 states have call predecessors, (26), 14 states have call successors, (26) [2023-11-21 19:36:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 974 transitions. [2023-11-21 19:36:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-21 19:36:53,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:36:53,610 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:53,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 19:36:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:36:53,826 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:36:53,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:36:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1688950344, now seen corresponding path program 2 times [2023-11-21 19:36:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:36:53,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652152379] [2023-11-21 19:36:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:36:53,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:36:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:36:53,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:36:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:36:53,977 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 19:36:53,977 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:36:53,979 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:36:53,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 19:36:53,985 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:36:53,990 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:36:54,050 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,053 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated [2023-11-21 19:36:54,054 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,055 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,055 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,056 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,056 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,058 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-11-21 19:36:54,060 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,060 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,061 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,062 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,062 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,063 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-11-21 19:36:54,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:36:54 BoogieIcfgContainer [2023-11-21 19:36:54,088 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:36:54,089 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:36:54,089 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:36:54,089 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:36:54,090 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:36:16" (3/4) ... [2023-11-21 19:36:54,091 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 19:36:54,105 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,107 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated [2023-11-21 19:36:54,108 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,108 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,109 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,109 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,109 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,110 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-11-21 19:36:54,114 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,114 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,114 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,115 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,115 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-21 19:36:54,116 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated [2023-11-21 19:36:54,201 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 19:36:54,201 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:36:54,202 INFO L158 Benchmark]: Toolchain (without parser) took 38883.92ms. Allocated memory was 142.6MB in the beginning and 857.7MB in the end (delta: 715.1MB). Free memory was 96.1MB in the beginning and 690.4MB in the end (delta: -594.3MB). Peak memory consumption was 123.1MB. Max. memory is 16.1GB. [2023-11-21 19:36:54,202 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:36:54,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 531.84ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 76.3MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 19:36:54,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.91ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 74.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:36:54,204 INFO L158 Benchmark]: Boogie Preprocessor took 36.08ms. Allocated memory is still 142.6MB. Free memory was 74.3MB in the beginning and 72.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:36:54,204 INFO L158 Benchmark]: RCFGBuilder took 770.61ms. Allocated memory is still 142.6MB. Free memory was 72.5MB in the beginning and 106.8MB in the end (delta: -34.3MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2023-11-21 19:36:54,205 INFO L158 Benchmark]: TraceAbstraction took 37329.21ms. Allocated memory was 142.6MB in the beginning and 857.7MB in the end (delta: 715.1MB). Free memory was 105.7MB in the beginning and 697.8MB in the end (delta: -592.1MB). Peak memory consumption was 121.8MB. Max. memory is 16.1GB. [2023-11-21 19:36:54,205 INFO L158 Benchmark]: Witness Printer took 112.71ms. Allocated memory is still 857.7MB. Free memory was 697.8MB in the beginning and 690.4MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 19:36:54,207 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 531.84ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 76.3MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.91ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 74.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.08ms. Allocated memory is still 142.6MB. Free memory was 74.3MB in the beginning and 72.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 770.61ms. Allocated memory is still 142.6MB. Free memory was 72.5MB in the beginning and 106.8MB in the end (delta: -34.3MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * TraceAbstraction took 37329.21ms. Allocated memory was 142.6MB in the beginning and 857.7MB in the end (delta: 715.1MB). Free memory was 105.7MB in the beginning and 697.8MB in the end (delta: -592.1MB). Peak memory consumption was 121.8MB. Max. memory is 16.1GB. * Witness Printer took 112.71ms. Allocated memory is still 857.7MB. Free memory was 697.8MB in the beginning and 690.4MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [49] - GenericResultAtLocation [Line: 118]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [118] - GenericResultAtLocation [Line: 322]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [322] - GenericResultAtLocation [Line: 331]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [331] - GenericResultAtLocation [Line: 697]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [697] - GenericResultAtLocation [Line: 724]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [724] - GenericResultAtLocation [Line: 823]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [823] - GenericResultAtLocation [Line: 917]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [917] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 327]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L127] int pumpRunning = 0; [L128] int systemActive = 1; [L501] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L725] int cleanupTimeShifts = 4; [L824] int waterLevel = 1; [L825] int methaneLevelCritical = 0; [L801] int retValue_acc ; [L802] int tmp ; [L806] FCALL select_helpers() [L807] FCALL select_features() [L808] CALL, EXPR valid_product() [L944] int retValue_acc ; [L947] retValue_acc = 1 [L948] return (retValue_acc); [L808] RET, EXPR valid_product() [L808] tmp = valid_product() [L810] COND TRUE \read(tmp) [L812] FCALL setup() [L813] CALL runTest() [L792] CALL test() [L55] int splverifierCounter ; [L56] int tmp ; [L57] int tmp___0 ; [L58] int tmp___1 ; [L59] int tmp___2 ; [L62] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L76] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] COND TRUE waterLevel < 2 [L843] waterLevel = waterLevel + 1 [L76] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___2)) [L98] tmp___1 = __VERIFIER_nondet_int() [L100] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=2] [L107] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L135] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L193] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L208] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] COND TRUE ! pumpRunning [L169] CALL, EXPR isHighWaterLevel() [L304] int retValue_acc ; [L305] int tmp ; [L306] int tmp___0 ; [L310] CALL, EXPR isHighWaterSensorDry() [L904] int retValue_acc ; [L907] COND FALSE !(waterLevel < 2) [L911] retValue_acc = 0 [L912] return (retValue_acc); [L310] RET, EXPR isHighWaterSensorDry() [L310] tmp = isHighWaterSensorDry() [L312] COND FALSE !(\read(tmp)) [L315] tmp___0 = 1 [L317] retValue_acc = tmp___0 [L318] return (retValue_acc); [L169] RET, EXPR isHighWaterLevel() [L169] tmp = isHighWaterLevel() [L171] COND TRUE \read(tmp) [L173] CALL activatePump() [L223] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); [L227] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] tmp = isMethaneAlarm() [L229] COND FALSE !(\read(tmp)) [L233] CALL activatePump__wrappee__highWaterSensor() [L218] pumpRunning = 1 [L233] RET activatePump__wrappee__highWaterSensor() [L173] RET activatePump() [L208] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L150] RET __utac_acc__Specification4_spec__1() [L107] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=2] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=2] [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=2] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=2] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=2] [L107] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L135] COND TRUE \read(pumpRunning) [L137] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L137] RET lowerWaterLevel() [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); [L195] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L203] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L164] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L167] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L182] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L203] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L150] RET __utac_acc__Specification4_spec__1() [L107] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=1] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=1] [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=1] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=1] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___2)) [L98] tmp___1 = __VERIFIER_nondet_int() [L100] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=1] [L107] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L135] COND TRUE \read(pumpRunning) [L137] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L137] RET lowerWaterLevel() [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L193] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); [L195] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L203] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L164] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L167] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L182] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L203] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND TRUE tmp == 0 [L709] CALL, EXPR isPumpRunning() [L259] int retValue_acc ; [L262] retValue_acc = pumpRunning [L263] return (retValue_acc); [L709] RET, EXPR isPumpRunning() [L709] tmp___0 = isPumpRunning() [L711] COND TRUE \read(tmp___0) [L713] CALL __automaton_fail() [L327] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 37.1s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3030 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3003 mSDsluCounter, 1654 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1231 mSDsCounter, 2029 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3319 IncrementalHoareTripleChecker+Invalid, 5348 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2029 mSolverCounterUnsat, 423 mSDtfsCounter, 3319 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 879 GetRequests, 491 SyntacticMatches, 17 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19421 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=10, InterpolantAutomatonStates: 262, 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, 10 MinimizatonAttempts, 774 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 755 NumberOfCodeBlocks, 755 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 789 ConstructedInterpolants, 0 QuantifiedInterpolants, 2771 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1108 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 230/387 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-21 19:36:54,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e61a9747-9a60-4b32-a945-bec3a84e4594/bin/utaipan-verify-QoSU8krkJ5/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE