./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aba011a2dee79947f4cca7910fc4583b21e1f3cb9acd1affa050aa7677352666 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:24:59,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:24:59,702 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:24:59,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:24:59,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:24:59,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:24:59,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:24:59,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:24:59,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:24:59,747 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:24:59,748 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:24:59,748 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:24:59,748 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:24:59,748 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:24:59,748 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:24:59,748 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:24:59,748 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:24:59,749 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:24:59,749 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:24:59,749 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:24:59,749 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:24:59,749 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:24:59,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:24:59,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:24:59,750 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:24:59,750 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:24:59,750 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:24:59,750 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:24:59,750 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:24:59,750 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:24:59,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:24:59,750 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:24:59,750 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:24:59,750 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:24:59,750 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:24:59,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:24:59,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:24:59,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:24:59,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:24:59,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:24:59,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:24:59,752 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:24:59,752 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:24:59,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:24:59,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:24:59,753 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:24:59,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:24:59,753 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aba011a2dee79947f4cca7910fc4583b21e1f3cb9acd1affa050aa7677352666 [2024-11-14 05:25:00,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:25:00,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:25:00,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:25:00,066 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:25:00,066 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:25:00,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c Unable to find full path for "g++" [2024-11-14 05:25:01,908 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:25:02,223 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:25:02,224 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2024-11-14 05:25:02,248 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/data/6c7a65386/aceb24fa2e674ceab8ed03e2de705814/FLAG2f8aaa723 [2024-11-14 05:25:02,270 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/data/6c7a65386/aceb24fa2e674ceab8ed03e2de705814 [2024-11-14 05:25:02,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:25:02,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:25:02,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:25:02,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:25:02,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:25:02,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0266a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02, skipping insertion in model container [2024-11-14 05:25:02,289 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:25:02,539 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2024-11-14 05:25:02,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:25:02,720 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:25:02,731 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2024-11-14 05:25:02,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] [2024-11-14 05:25:02,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [96] [2024-11-14 05:25:02,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [199] [2024-11-14 05:25:02,733 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [308] [2024-11-14 05:25:02,734 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [674] [2024-11-14 05:25:02,734 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [724] [2024-11-14 05:25:02,734 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [789] [2024-11-14 05:25:02,741 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2024-11-14 05:25:02,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:25:02,829 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:25:02,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02 WrapperNode [2024-11-14 05:25:02,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:25:02,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:25:02,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:25:02,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:25:02,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,886 INFO L138 Inliner]: procedures = 58, calls = 103, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 231 [2024-11-14 05:25:02,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:25:02,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:25:02,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:25:02,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:25:02,898 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:25:02,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:25:02,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:25:02,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:25:02,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (1/1) ... [2024-11-14 05:25:02,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:25:02,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:02,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:25:02,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:25:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:25:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-14 05:25:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-14 05:25:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 05:25:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 05:25:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 05:25:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 05:25:03,001 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 05:25:03,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 05:25:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-14 05:25:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-14 05:25:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-14 05:25:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-14 05:25:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:25:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-14 05:25:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-14 05:25:03,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:25:03,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:25:03,094 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:25:03,096 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:25:03,400 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-14 05:25:03,400 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:25:03,528 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:25:03,529 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:25:03,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:25:03 BoogieIcfgContainer [2024-11-14 05:25:03,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:25:03,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:25:03,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:25:03,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:25:03,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:25:02" (1/3) ... [2024-11-14 05:25:03,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62de14a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:25:03, skipping insertion in model container [2024-11-14 05:25:03,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:25:02" (2/3) ... [2024-11-14 05:25:03,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62de14a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:25:03, skipping insertion in model container [2024-11-14 05:25:03,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:25:03" (3/3) ... [2024-11-14 05:25:03,542 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2024-11-14 05:25:03,558 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:25:03,561 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG minepump_spec5_product57.cil.c that has 8 procedures, 58 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 05:25:03,630 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:25:03,647 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ec8df11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:25:03,647 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:25:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 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) [2024-11-14 05:25:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:25:03,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:03,659 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:03,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:03,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1700661906, now seen corresponding path program 1 times [2024-11-14 05:25:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:03,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186893440] [2024-11-14 05:25:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:03,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:25:03,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:03,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186893440] [2024-11-14 05:25:03,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186893440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:03,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:25:03,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:25:03,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616898805] [2024-11-14 05:25:03,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:03,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:25:03,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:03,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:25:03,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:25:03,858 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:25:03,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:03,923 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2024-11-14 05:25:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:25:03,926 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-14 05:25:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:03,951 INFO L225 Difference]: With dead ends: 114 [2024-11-14 05:25:03,951 INFO L226 Difference]: Without dead ends: 53 [2024-11-14 05:25:03,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:25:03,957 INFO L432 NwaCegarLoop]: 57 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, 57 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 [2024-11-14 05:25:03,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:25:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-14 05:25:03,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-14 05:25:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 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) [2024-11-14 05:25:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-14 05:25:03,998 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 21 [2024-11-14 05:25:03,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:03,999 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-14 05:25:03,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:25:03,999 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-14 05:25:04,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 05:25:04,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:04,002 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:04,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:25:04,002 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:04,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:04,003 INFO L85 PathProgramCache]: Analyzing trace with hash 413073217, now seen corresponding path program 1 times [2024-11-14 05:25:04,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:04,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024696978] [2024-11-14 05:25:04,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:04,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:25:04,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:04,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024696978] [2024-11-14 05:25:04,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024696978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:04,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:25:04,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:25:04,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834424821] [2024-11-14 05:25:04,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:04,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:25:04,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:04,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:25:04,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:25:04,172 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:25:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:04,232 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-11-14 05:25:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:25:04,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-14 05:25:04,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:04,234 INFO L225 Difference]: With dead ends: 83 [2024-11-14 05:25:04,234 INFO L226 Difference]: Without dead ends: 45 [2024-11-14 05:25:04,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:25:04,236 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 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 [2024-11-14 05:25:04,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:25:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-14 05:25:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-14 05:25:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 36 states have internal predecessors, (39), 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) [2024-11-14 05:25:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-14 05:25:04,251 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 22 [2024-11-14 05:25:04,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:04,252 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-14 05:25:04,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:25:04,252 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-14 05:25:04,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:25:04,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:04,253 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:04,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:25:04,254 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:04,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:04,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1725038017, now seen corresponding path program 1 times [2024-11-14 05:25:04,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:04,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906858181] [2024-11-14 05:25:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:25:04,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:04,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906858181] [2024-11-14 05:25:04,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906858181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:04,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:25:04,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:25:04,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267357999] [2024-11-14 05:25:04,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:04,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:25:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:04,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:25:04,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:25:04,411 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:25:04,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:04,466 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2024-11-14 05:25:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:25:04,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-14 05:25:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:04,468 INFO L225 Difference]: With dead ends: 88 [2024-11-14 05:25:04,468 INFO L226 Difference]: Without dead ends: 45 [2024-11-14 05:25:04,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:25:04,472 INFO L432 NwaCegarLoop]: 41 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, 41 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 [2024-11-14 05:25:04,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 41 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:25:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-14 05:25:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-14 05:25:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 36 states have internal predecessors, (38), 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) [2024-11-14 05:25:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-11-14 05:25:04,485 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 24 [2024-11-14 05:25:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:04,487 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-11-14 05:25:04,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:25:04,487 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-11-14 05:25:04,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 05:25:04,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:04,489 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:04,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:25:04,489 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:04,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:04,490 INFO L85 PathProgramCache]: Analyzing trace with hash 356101827, now seen corresponding path program 1 times [2024-11-14 05:25:04,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:04,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787809795] [2024-11-14 05:25:04,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:04,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:25:04,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:04,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787809795] [2024-11-14 05:25:04,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787809795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:04,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:25:04,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:25:04,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617596830] [2024-11-14 05:25:04,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:04,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:25:04,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:04,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:25:04,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:25:04,623 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:25:04,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:04,721 INFO L93 Difference]: Finished difference Result 125 states and 159 transitions. [2024-11-14 05:25:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:25:04,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-14 05:25:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:04,724 INFO L225 Difference]: With dead ends: 125 [2024-11-14 05:25:04,724 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 05:25:04,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:25:04,726 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 36 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:04,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 92 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:25:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 05:25:04,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2024-11-14 05:25:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 60 states have internal predecessors, (67), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2024-11-14 05:25:04,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2024-11-14 05:25:04,752 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 27 [2024-11-14 05:25:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:04,752 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2024-11-14 05:25:04,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:25:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2024-11-14 05:25:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 05:25:04,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:04,753 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:04,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:25:04,754 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:04,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash -143650625, now seen corresponding path program 1 times [2024-11-14 05:25:04,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:04,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638928669] [2024-11-14 05:25:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:04,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:25:05,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:05,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638928669] [2024-11-14 05:25:05,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638928669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:05,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:25:05,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 05:25:05,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452241847] [2024-11-14 05:25:05,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:05,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:25:05,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:05,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:25:05,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:25:05,136 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:25:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:05,375 INFO L93 Difference]: Finished difference Result 240 states and 298 transitions. [2024-11-14 05:25:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:25:05,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-11-14 05:25:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:05,378 INFO L225 Difference]: With dead ends: 240 [2024-11-14 05:25:05,378 INFO L226 Difference]: Without dead ends: 162 [2024-11-14 05:25:05,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:25:05,380 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 88 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:05,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 169 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:25:05,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-14 05:25:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2024-11-14 05:25:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 101 states have (on average 1.2475247524752475) internal successors, (126), 112 states have internal predecessors, (126), 28 states have call successors, (28), 24 states have call predecessors, (28), 24 states have return successors, (37), 26 states have call predecessors, (37), 28 states have call successors, (37) [2024-11-14 05:25:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 191 transitions. [2024-11-14 05:25:05,425 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 191 transitions. Word has length 32 [2024-11-14 05:25:05,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:05,430 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 191 transitions. [2024-11-14 05:25:05,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:25:05,430 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 191 transitions. [2024-11-14 05:25:05,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 05:25:05,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:05,431 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:05,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 05:25:05,432 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:05,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1619016724, now seen corresponding path program 1 times [2024-11-14 05:25:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:05,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950935537] [2024-11-14 05:25:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:05,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:25:05,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:05,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950935537] [2024-11-14 05:25:05,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950935537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:05,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:25:05,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:25:05,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402960636] [2024-11-14 05:25:05,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:05,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:25:05,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:05,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:25:05,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:25:05,763 INFO L87 Difference]: Start difference. First operand 154 states and 191 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:25:06,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:06,253 INFO L93 Difference]: Finished difference Result 363 states and 460 transitions. [2024-11-14 05:25:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 05:25:06,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-14 05:25:06,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:06,257 INFO L225 Difference]: With dead ends: 363 [2024-11-14 05:25:06,258 INFO L226 Difference]: Without dead ends: 260 [2024-11-14 05:25:06,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-14 05:25:06,262 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 173 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:06,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 215 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:25:06,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-14 05:25:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 231. [2024-11-14 05:25:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 156 states have (on average 1.2564102564102564) internal successors, (196), 172 states have internal predecessors, (196), 39 states have call successors, (39), 30 states have call predecessors, (39), 35 states have return successors, (54), 41 states have call predecessors, (54), 39 states have call successors, (54) [2024-11-14 05:25:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 289 transitions. [2024-11-14 05:25:06,310 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 289 transitions. Word has length 35 [2024-11-14 05:25:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:06,311 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 289 transitions. [2024-11-14 05:25:06,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:25:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 289 transitions. [2024-11-14 05:25:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 05:25:06,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:06,312 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:06,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 05:25:06,312 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:06,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1232021436, now seen corresponding path program 1 times [2024-11-14 05:25:06,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:06,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347423022] [2024-11-14 05:25:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:25:06,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:06,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347423022] [2024-11-14 05:25:06,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347423022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:06,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:25:06,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 05:25:06,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097830061] [2024-11-14 05:25:06,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:06,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 05:25:06,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:06,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 05:25:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 05:25:06,456 INFO L87 Difference]: Start difference. First operand 231 states and 289 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:25:06,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:06,808 INFO L93 Difference]: Finished difference Result 475 states and 599 transitions. [2024-11-14 05:25:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:25:06,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-11-14 05:25:06,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:06,814 INFO L225 Difference]: With dead ends: 475 [2024-11-14 05:25:06,814 INFO L226 Difference]: Without dead ends: 246 [2024-11-14 05:25:06,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:25:06,816 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 55 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:06,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 195 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:25:06,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-14 05:25:06,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 236. [2024-11-14 05:25:06,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 159 states have (on average 1.220125786163522) internal successors, (194), 175 states have internal predecessors, (194), 40 states have call successors, (40), 30 states have call predecessors, (40), 36 states have return successors, (57), 42 states have call predecessors, (57), 40 states have call successors, (57) [2024-11-14 05:25:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 291 transitions. [2024-11-14 05:25:06,890 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 291 transitions. Word has length 35 [2024-11-14 05:25:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:06,891 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 291 transitions. [2024-11-14 05:25:06,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 05:25:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 291 transitions. [2024-11-14 05:25:06,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 05:25:06,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:06,897 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:06,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 05:25:06,897 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:06,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:06,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1147768811, now seen corresponding path program 1 times [2024-11-14 05:25:06,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:06,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470128177] [2024-11-14 05:25:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:06,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:07,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:07,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470128177] [2024-11-14 05:25:07,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470128177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:07,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730866644] [2024-11-14 05:25:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:07,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:07,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:07,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:07,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:25:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:07,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:25:07,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:07,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-14 05:25:07,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730866644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:07,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [72431467] [2024-11-14 05:25:07,811 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-14 05:25:07,811 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:25:07,815 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:25:07,819 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:25:07,820 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:25:11,977 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 147 for LOIs [2024-11-14 05:25:12,200 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2024-11-14 05:25:12,771 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 62 for LOIs [2024-11-14 05:25:12,822 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 34 for LOIs [2024-11-14 05:25:12,859 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:25:16,549 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3965#(and (<= |old(~waterLevel~0)| 2147483647) (exists ((|v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_test_#t~nondet40#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_37| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_19| Int) (|v_ULTIMATE.start_test_~tmp___2~0#1_16| Int) (|v_ULTIMATE.start_test_#t~nondet40#1_20| Int)) (and (<= 0 (+ 2147483648 |v_ULTIMATE.start_test_~tmp___2~0#1_16|)) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_16| 2147483647) (or (and (= |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_test_~tmp___1~0#1_37|) (= |v_ULTIMATE.start_test_#t~nondet40#1_20| |v_ULTIMATE.start_test_#t~nondet40#1_BEFORE_CALL_9|) (not (= 0 |v_ULTIMATE.start_test_~tmp___2~0#1_16|))) (and (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~0#1_19| 2147483648)) (= 0 |v_ULTIMATE.start_test_~tmp___2~0#1_16|) (<= |v_ULTIMATE.start_test_~tmp___1~0#1_19| 2147483647))))) (= ~methaneLevelCritical~0 0) (not (= 2 ~waterLevel~0)) (<= 2 ~waterLevel~0) (= |old(~pumpRunning~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0) (= ~switchedOnBeforeTS~0 0) (not (= 0 ~systemActive~0)) (= ~pumpRunning~0 1) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2024-11-14 05:25:16,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:25:16,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:16,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-14 05:25:16,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336548168] [2024-11-14 05:25:16,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:16,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 05:25:16,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:16,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 05:25:16,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 05:25:16,552 INFO L87 Difference]: Start difference. First operand 236 states and 291 transitions. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-14 05:25:17,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:17,188 INFO L93 Difference]: Finished difference Result 857 states and 1102 transitions. [2024-11-14 05:25:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 05:25:17,189 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) Word has length 60 [2024-11-14 05:25:17,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:17,194 INFO L225 Difference]: With dead ends: 857 [2024-11-14 05:25:17,194 INFO L226 Difference]: Without dead ends: 729 [2024-11-14 05:25:17,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 150 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=240, Invalid=1400, Unknown=0, NotChecked=0, Total=1640 [2024-11-14 05:25:17,197 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 349 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:17,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 401 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:25:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-14 05:25:17,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 634. [2024-11-14 05:25:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 429 states have (on average 1.2121212121212122) internal successors, (520), 460 states have internal predecessors, (520), 111 states have call successors, (111), 84 states have call predecessors, (111), 93 states have return successors, (145), 108 states have call predecessors, (145), 111 states have call successors, (145) [2024-11-14 05:25:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 776 transitions. [2024-11-14 05:25:17,271 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 776 transitions. Word has length 60 [2024-11-14 05:25:17,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:17,272 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 776 transitions. [2024-11-14 05:25:17,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-14 05:25:17,272 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 776 transitions. [2024-11-14 05:25:17,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-14 05:25:17,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:17,275 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:17,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:25:17,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 05:25:17,479 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:17,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:17,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1987758496, now seen corresponding path program 1 times [2024-11-14 05:25:17,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:17,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246535598] [2024-11-14 05:25:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:17,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:25:17,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:17,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246535598] [2024-11-14 05:25:17,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246535598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:17,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323437683] [2024-11-14 05:25:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:17,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:17,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:17,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:17,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:25:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:17,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 05:25:17,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:18,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 05:25:18,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323437683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:18,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [243397985] [2024-11-14 05:25:18,135 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2024-11-14 05:25:18,136 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:25:18,136 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:25:18,136 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:25:18,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:25:19,504 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 23 for LOIs [2024-11-14 05:25:19,511 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 38 for LOIs [2024-11-14 05:25:20,128 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 61 for LOIs [2024-11-14 05:25:20,167 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 38 for LOIs [2024-11-14 05:25:20,202 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 13 for LOIs [2024-11-14 05:25:20,204 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:25:23,353 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6607#(and (exists ((|v_ULTIMATE.start_test_#t~nondet40#1_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_44| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_19| Int) (|v_ULTIMATE.start_test_~tmp___2~0#1_16| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_test_#t~nondet40#1_23| Int)) (and (<= 0 (+ 2147483648 |v_ULTIMATE.start_test_~tmp___2~0#1_16|)) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_16| 2147483647) (or (and (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~0#1_19| 2147483648)) (= 0 |v_ULTIMATE.start_test_~tmp___2~0#1_16|) (<= |v_ULTIMATE.start_test_~tmp___1~0#1_19| 2147483647)) (and (= |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_16| |v_ULTIMATE.start_test_~tmp___1~0#1_44|) (= |v_ULTIMATE.start_test_#t~nondet40#1_23| |v_ULTIMATE.start_test_#t~nondet40#1_BEFORE_CALL_16|) (not (= 0 |v_ULTIMATE.start_test_~tmp___2~0#1_16|)))))) (= ~methaneLevelCritical~0 0) (not (= 2 ~waterLevel~0)) (= |old(~pumpRunning~0)| 0) (<= 2 |old(~waterLevel~0)|) (<= ~waterLevel~0 2147483647) (= |old(~waterLevel~0)| ~waterLevel~0) (= ~switchedOnBeforeTS~0 0) (not (= 0 ~systemActive~0)) (= ~pumpRunning~0 1))' at error location [2024-11-14 05:25:23,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:25:23,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:23,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6, 6] total 21 [2024-11-14 05:25:23,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732620363] [2024-11-14 05:25:23,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:23,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 05:25:23,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:23,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 05:25:23,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2024-11-14 05:25:23,356 INFO L87 Difference]: Start difference. First operand 634 states and 776 transitions. Second operand has 21 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 9 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-14 05:25:27,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:27,858 INFO L93 Difference]: Finished difference Result 2444 states and 3063 transitions. [2024-11-14 05:25:27,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-14 05:25:27,858 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 9 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 63 [2024-11-14 05:25:27,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:27,869 INFO L225 Difference]: With dead ends: 2444 [2024-11-14 05:25:27,870 INFO L226 Difference]: Without dead ends: 1698 [2024-11-14 05:25:27,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 188 SyntacticMatches, 6 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7983 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2120, Invalid=19342, Unknown=0, NotChecked=0, Total=21462 [2024-11-14 05:25:27,878 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1282 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 3250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:27,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 443 Invalid, 3250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 05:25:27,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2024-11-14 05:25:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1476. [2024-11-14 05:25:28,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 989 states have (on average 1.172901921132457) internal successors, (1160), 1068 states have internal predecessors, (1160), 251 states have call successors, (251), 213 states have call predecessors, (251), 235 states have return successors, (390), 241 states have call predecessors, (390), 251 states have call successors, (390) [2024-11-14 05:25:28,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1801 transitions. [2024-11-14 05:25:28,055 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1801 transitions. Word has length 63 [2024-11-14 05:25:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:28,055 INFO L471 AbstractCegarLoop]: Abstraction has 1476 states and 1801 transitions. [2024-11-14 05:25:28,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.777777777777778) internal successors, (86), 19 states have internal predecessors, (86), 9 states have call successors, (20), 6 states have call predecessors, (20), 7 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-14 05:25:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1801 transitions. [2024-11-14 05:25:28,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-14 05:25:28,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:28,058 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:28,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:25:28,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:28,259 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:28,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:28,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1382548815, now seen corresponding path program 1 times [2024-11-14 05:25:28,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:28,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441426119] [2024-11-14 05:25:28,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:28,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:25:28,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:28,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441426119] [2024-11-14 05:25:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441426119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875942643] [2024-11-14 05:25:28,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:28,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:28,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:28,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:28,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:25:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:28,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:25:28,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:25:28,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:25:28,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875942643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:28,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [280885168] [2024-11-14 05:25:28,992 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2024-11-14 05:25:28,992 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:25:28,992 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:25:28,992 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:25:28,993 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:25:33,370 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 145 for LOIs [2024-11-14 05:25:33,445 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 34 for LOIs [2024-11-14 05:25:33,598 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 37 for LOIs [2024-11-14 05:25:33,603 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 54 for LOIs [2024-11-14 05:25:33,691 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 41 for LOIs [2024-11-14 05:25:33,695 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:25:36,488 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13150#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (not (= 2 ~waterLevel~0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 05:25:36,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:25:36,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:36,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-11-14 05:25:36,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655927692] [2024-11-14 05:25:36,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:36,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 05:25:36,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:36,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 05:25:36,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1884, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 05:25:36,491 INFO L87 Difference]: Start difference. First operand 1476 states and 1801 transitions. Second operand has 19 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 9 states have call successors, (25), 5 states have call predecessors, (25), 10 states have return successors, (22), 13 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-14 05:25:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:38,786 INFO L93 Difference]: Finished difference Result 2001 states and 2517 transitions. [2024-11-14 05:25:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-14 05:25:38,786 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 9 states have call successors, (25), 5 states have call predecessors, (25), 10 states have return successors, (22), 13 states have call predecessors, (22), 8 states have call successors, (22) Word has length 63 [2024-11-14 05:25:38,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:38,799 INFO L225 Difference]: With dead ends: 2001 [2024-11-14 05:25:38,799 INFO L226 Difference]: Without dead ends: 1999 [2024-11-14 05:25:38,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 161 SyntacticMatches, 12 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3081 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1080, Invalid=8040, Unknown=0, NotChecked=0, Total=9120 [2024-11-14 05:25:38,803 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 606 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:38,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 927 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:25:38,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2024-11-14 05:25:38,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1726. [2024-11-14 05:25:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1148 states have (on average 1.1689895470383276) internal successors, (1342), 1257 states have internal predecessors, (1342), 295 states have call successors, (295), 251 states have call predecessors, (295), 282 states have return successors, (478), 277 states have call predecessors, (478), 295 states have call successors, (478) [2024-11-14 05:25:39,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2115 transitions. [2024-11-14 05:25:39,005 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2115 transitions. Word has length 63 [2024-11-14 05:25:39,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:39,006 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2115 transitions. [2024-11-14 05:25:39,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 9 states have call successors, (25), 5 states have call predecessors, (25), 10 states have return successors, (22), 13 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-14 05:25:39,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2115 transitions. [2024-11-14 05:25:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-14 05:25:39,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:39,010 INFO L215 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:39,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:25:39,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 05:25:39,215 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:39,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash -960831408, now seen corresponding path program 1 times [2024-11-14 05:25:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:39,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433024947] [2024-11-14 05:25:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:39,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-14 05:25:40,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:40,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433024947] [2024-11-14 05:25:40,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433024947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:40,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534029262] [2024-11-14 05:25:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:40,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:40,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:40,192 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:40,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:25:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:40,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:25:40,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 55 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:25:40,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:25:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 05:25:41,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534029262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:25:41,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1056186780] [2024-11-14 05:25:41,085 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2024-11-14 05:25:41,086 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:25:41,086 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:25:41,086 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:25:41,086 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:25:42,861 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 148 for LOIs [2024-11-14 05:25:42,964 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 35 for LOIs [2024-11-14 05:25:43,117 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 41 for LOIs [2024-11-14 05:25:43,124 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 34 for LOIs [2024-11-14 05:25:43,157 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:25:46,448 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19498#(and (not (= ~pumpRunning~0 0)) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= 2 ~waterLevel~0)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 05:25:46,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:25:46,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:25:46,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 32 [2024-11-14 05:25:46,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532196936] [2024-11-14 05:25:46,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:25:46,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-14 05:25:46,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:46,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-14 05:25:46,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2958, Unknown=0, NotChecked=0, Total=3306 [2024-11-14 05:25:46,452 INFO L87 Difference]: Start difference. First operand 1726 states and 2115 transitions. Second operand has 32 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 17 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (24), 16 states have call predecessors, (24), 16 states have call successors, (24) [2024-11-14 05:25:54,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:54,152 INFO L93 Difference]: Finished difference Result 4412 states and 5622 transitions. [2024-11-14 05:25:54,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2024-11-14 05:25:54,152 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 17 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (24), 16 states have call predecessors, (24), 16 states have call successors, (24) Word has length 85 [2024-11-14 05:25:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:54,169 INFO L225 Difference]: With dead ends: 4412 [2024-11-14 05:25:54,169 INFO L226 Difference]: Without dead ends: 2741 [2024-11-14 05:25:54,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 279 SyntacticMatches, 13 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16232 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=4452, Invalid=34950, Unknown=0, NotChecked=0, Total=39402 [2024-11-14 05:25:54,185 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 2611 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 1841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2616 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 4336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1841 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:54,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2616 Valid, 1244 Invalid, 4336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1841 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-14 05:25:54,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2024-11-14 05:25:54,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 1781. [2024-11-14 05:25:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1191 states have (on average 1.1259445843828715) internal successors, (1341), 1271 states have internal predecessors, (1341), 290 states have call successors, (290), 266 states have call predecessors, (290), 299 states have return successors, (355), 284 states have call predecessors, (355), 290 states have call successors, (355) [2024-11-14 05:25:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 1986 transitions. [2024-11-14 05:25:54,501 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 1986 transitions. Word has length 85 [2024-11-14 05:25:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:54,502 INFO L471 AbstractCegarLoop]: Abstraction has 1781 states and 1986 transitions. [2024-11-14 05:25:54,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 17 states have call successors, (26), 8 states have call predecessors, (26), 12 states have return successors, (24), 16 states have call predecessors, (24), 16 states have call successors, (24) [2024-11-14 05:25:54,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 1986 transitions. [2024-11-14 05:25:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-14 05:25:54,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:25:54,506 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:54,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 05:25:54,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 05:25:54,711 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:25:54,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:25:54,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1908651846, now seen corresponding path program 1 times [2024-11-14 05:25:54,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:25:54,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14511858] [2024-11-14 05:25:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:54,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:25:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-14 05:25:54,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:25:54,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14511858] [2024-11-14 05:25:54,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14511858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:25:54,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245481255] [2024-11-14 05:25:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:25:54,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:25:54,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:25:54,826 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:25:54,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:25:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:25:54,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:25:54,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:25:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-14 05:25:55,029 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:25:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245481255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:25:55,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:25:55,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-11-14 05:25:55,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467500967] [2024-11-14 05:25:55,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:25:55,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:25:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:25:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:25:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-14 05:25:55,033 INFO L87 Difference]: Start difference. First operand 1781 states and 1986 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 05:25:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:25:55,290 INFO L93 Difference]: Finished difference Result 2365 states and 2636 transitions. [2024-11-14 05:25:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:25:55,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2024-11-14 05:25:55,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:25:55,295 INFO L225 Difference]: With dead ends: 2365 [2024-11-14 05:25:55,295 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 05:25:55,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:25:55,300 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 32 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:25:55,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 182 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:25:55,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 05:25:55,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 05:25:55,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:25:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 05:25:55,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2024-11-14 05:25:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:25:55,303 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 05:25:55,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 05:25:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 05:25:55,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 05:25:55,306 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 05:25:55,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 05:25:55,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 05:25:55,514 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:25:55,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 05:26:07,329 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:26:07,357 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse3 (= ~waterLevel~0 1)) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (= 1 ~systemActive~0))) (and (let ((.cse0 (= 2 ~waterLevel~0))) (or (and .cse0 .cse1 (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~pumpRunning~0 1))) (and .cse2 .cse0 .cse1) .cse3)) (or (not .cse3) (and .cse2 .cse1)) (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0))) Eliminated clause: (let ((.cse3 (= ~waterLevel~0 1)) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (= 1 ~systemActive~0))) (and (let ((.cse0 (= 2 ~waterLevel~0))) (or (and .cse0 (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) .cse1) (and .cse2 .cse0 .cse1) .cse3)) (or (not .cse3) (and .cse2 .cse1)))) [2024-11-14 05:26:07,363 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse2 (= |old(~waterLevel~0)| 2)) (.cse0 (= |old(~waterLevel~0)| 1)) (.cse1 (= 1 ~systemActive~0))) (and (or .cse0 (and .cse1 .cse2)) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not .cse2)) (or (not .cse0) (and (= ~pumpRunning~0 0) .cse1 (= |old(~pumpRunning~0)| 0) (= ~waterLevel~0 1))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse2 (= |old(~waterLevel~0)| 2)) (.cse0 (= |old(~waterLevel~0)| 1)) (.cse1 (= 1 ~systemActive~0))) (and (or .cse0 (and .cse1 .cse2)) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not .cse2)) (or (not .cse0) (and (= ~pumpRunning~0 0) .cse1 (= |old(~pumpRunning~0)| 0) (= ~waterLevel~0 1)))))) [2024-11-14 05:26:07,372 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 05:26:07,374 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (<= ~waterLevel~0 2)) Eliminated clause: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (<= ~waterLevel~0 2)) [2024-11-14 05:26:07,378 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (let ((.cse0 (= ~pumpRunning~0 0))) (and (or (and (= 2 ~waterLevel~0) (= |old(~waterLevel~0)| 2)) (and .cse0 (= |old(~waterLevel~0)| 1) (= ~waterLevel~0 1))) (let ((.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1) (and (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) .cse1))))) Eliminated clause: (let ((.cse0 (= ~pumpRunning~0 0))) (and (or (= 2 ~waterLevel~0) (and .cse0 (= ~waterLevel~0 1))) (let ((.cse1 (= 1 ~systemActive~0))) (or (and .cse0 .cse1) (and (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) .cse1))))) [2024-11-14 05:26:07,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:26:07 BoogieIcfgContainer [2024-11-14 05:26:07,384 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:26:07,385 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:26:07,385 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:26:07,385 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:26:07,386 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:25:03" (3/4) ... [2024-11-14 05:26:07,388 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 05:26:07,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-14 05:26:07,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-14 05:26:07,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-14 05:26:07,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-14 05:26:07,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 05:26:07,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-14 05:26:07,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-11-14 05:26:07,397 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2024-11-14 05:26:07,398 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-14 05:26:07,398 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-14 05:26:07,399 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 05:26:07,399 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 05:26:07,516 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 05:26:07,517 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 05:26:07,517 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:26:07,518 INFO L158 Benchmark]: Toolchain (without parser) took 65239.96ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 116.2MB in the beginning and 761.6MB in the end (delta: -645.4MB). Peak memory consumption was 839.8MB. Max. memory is 16.1GB. [2024-11-14 05:26:07,518 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:26:07,518 INFO L158 Benchmark]: CACSL2BoogieTranslator took 550.96ms. Allocated memory is still 142.6MB. Free memory was 116.0MB in the beginning and 97.2MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:26:07,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.20ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 95.3MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:26:07,519 INFO L158 Benchmark]: Boogie Preprocessor took 36.55ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 94.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:26:07,519 INFO L158 Benchmark]: RCFGBuilder took 603.81ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 64.7MB in the end (delta: 29.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:26:07,519 INFO L158 Benchmark]: TraceAbstraction took 63851.68ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 64.2MB in the beginning and 770.0MB in the end (delta: -705.8MB). Peak memory consumption was 956.6MB. Max. memory is 16.1GB. [2024-11-14 05:26:07,520 INFO L158 Benchmark]: Witness Printer took 131.91ms. Allocated memory is still 1.6GB. Free memory was 770.0MB in the beginning and 761.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:26:07,521 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 550.96ms. Allocated memory is still 142.6MB. Free memory was 116.0MB in the beginning and 97.2MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.20ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 95.3MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.55ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 94.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 603.81ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 64.7MB in the end (delta: 29.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 63851.68ms. Allocated memory was 142.6MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 64.2MB in the beginning and 770.0MB in the end (delta: -705.8MB). Peak memory consumption was 956.6MB. Max. memory is 16.1GB. * Witness Printer took 131.91ms. Allocated memory is still 1.6GB. Free memory was 770.0MB in the beginning and 761.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] - GenericResultAtLocation [Line: 96]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [96] - GenericResultAtLocation [Line: 199]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [199] - GenericResultAtLocation [Line: 308]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [308] - GenericResultAtLocation [Line: 674]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [674] - GenericResultAtLocation [Line: 724]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [724] - GenericResultAtLocation [Line: 789]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [789] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 51.9s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5319 SdHoareTripleChecker+Valid, 6.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5283 mSDsluCounter, 4043 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3234 mSDsCounter, 3250 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7097 IncrementalHoareTripleChecker+Invalid, 10347 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3250 mSolverCounterUnsat, 809 mSDtfsCounter, 7097 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1446 GetRequests, 892 SyntacticMatches, 38 SemanticMatches, 516 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28082 ImplicationChecksByTransitivity, 22.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1781occurred in iteration=11, InterpolantAutomatonStates: 363, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 1599 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 926 NumberOfCodeBlocks, 926 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1176 ConstructedInterpolants, 0 QuantifiedInterpolants, 3694 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1429 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 470/631 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 734]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 735]: Loop Invariant Derived loop invariant: ((((((2 == waterLevel) && ((methaneLevelCritical != 0) || (pumpRunning == 1))) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1))) || ((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) - ProcedureContractResult [Line: 822]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) Ensures: ((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) && (((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 232]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((((((2 == waterLevel) && ((methaneLevelCritical != 0) || (pumpRunning == 1))) && (1 == systemActive)) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) || (waterLevel == 1)) && ((waterLevel != 1) || ((pumpRunning == 0) && (1 == systemActive)))) Ensures: ((((\old(methaneLevelCritical) != 0) || (methaneLevelCritical == 1)) && (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || (((2 == waterLevel) && (1 == systemActive)) && ((\old(methaneLevelCritical) != 0) || (pumpRunning == 1)))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)))) && ((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (waterLevel == \old(waterLevel))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 795]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: (((((((((0 < switchedOnBeforeTS) || (methaneLevelCritical != 0)) || (\old(pumpRunning) != 1)) && (((0 < switchedOnBeforeTS) || (\old(pumpRunning) != 1)) || (methaneLevelCritical != systemActive))) && ((\old(waterLevel) == 1) || (\old(waterLevel) == 2))) && (((((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || ((((\old(pumpRunning) != 0) && (pumpRunning == 0)) && (1 == systemActive)) && (waterLevel == 1))) || (\old(waterLevel) != 2)) || ((((2 == waterLevel) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (pumpRunning == 1)))) && ((\old(waterLevel) != 1) || ((((pumpRunning == 0) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (waterLevel == 1)))) && ((pumpRunning == 0) || ((methaneLevelCritical == 0) && (\old(pumpRunning) != 1)))) && ((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 99]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 830]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Requires: (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) Ensures: (((((((pumpRunning == 0) || ((2 == waterLevel) && (pumpRunning == 1))) && (1 == systemActive)) && (\old(pumpRunning) == 0)) && (waterLevel <= 2)) && ((pumpRunning == 0) || (methaneLevelCritical == 0))) && ((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 220]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((2 == waterLevel) || ((pumpRunning == 0) && (waterLevel == 1))) && (((pumpRunning == 0) && (1 == systemActive)) || (((methaneLevelCritical != 0) || (pumpRunning == 1)) && (1 == systemActive)))) Ensures: ((((2 == waterLevel) && (((((pumpRunning == 0) && (1 == systemActive)) && (\old(waterLevel) == 2)) || (\old(waterLevel) == 1)) || ((((methaneLevelCritical != 0) || (pumpRunning == 1)) && (1 == systemActive)) && (\old(waterLevel) == 2)))) && ((\old(waterLevel) != 1) || ((pumpRunning == 0) && (1 == systemActive)))) && ((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 926]: Procedure Contract for isPumpRunning Derived contract for procedure isPumpRunning. Requires: (((2 == waterLevel) && (1 == systemActive)) || (((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive))) Ensures: ((((1 == systemActive) && ((2 == waterLevel) || ((pumpRunning == 0) && (waterLevel <= 1)))) && (pumpRunning == \result)) && (((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) RESULT: Ultimate proved your program to be correct! [2024-11-14 05:26:07,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91ffb0ff-f64d-4686-ad1b-c4be30c128c2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE