./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68c6d60a43782147acd714b0904a144255717c2aa47fb6b6f8991672a1483369 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:11:56,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:11:57,029 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:11:57,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:11:57,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:11:57,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:11:57,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:11:57,066 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:11:57,067 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:11:57,067 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:11:57,068 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:11:57,068 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:11:57,068 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:11:57,069 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:11:57,069 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:11:57,069 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:11:57,070 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:11:57,070 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:11:57,070 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:11:57,071 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:11:57,071 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:11:57,072 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:11:57,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:11:57,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:11:57,073 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:11:57,073 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:11:57,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:11:57,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:11:57,074 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:11:57,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:11:57,075 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:11:57,075 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:11:57,076 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:11:57,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:11:57,076 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:11:57,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:11:57,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:11:57,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:11:57,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:11:57,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:11:57,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:11:57,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:11:57,079 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:11:57,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:11:57,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:11:57,079 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:11:57,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:11:57,080 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68c6d60a43782147acd714b0904a144255717c2aa47fb6b6f8991672a1483369 [2024-11-09 05:11:57,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:11:57,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:11:57,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:11:57,408 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:11:57,409 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:11:57,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c Unable to find full path for "g++" [2024-11-09 05:11:59,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:11:59,739 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:11:59,740 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c [2024-11-09 05:11:59,754 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/data/c45b4e8ab/e31fedb8c2e4402c82be3d3fc0b3a1d9/FLAG0d23389ab [2024-11-09 05:12:00,079 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/data/c45b4e8ab/e31fedb8c2e4402c82be3d3fc0b3a1d9 [2024-11-09 05:12:00,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:12:00,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:12:00,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:12:00,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:12:00,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:12:00,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7412da54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00, skipping insertion in model container [2024-11-09 05:12:00,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,166 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:12:00,372 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_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c[1605,1618] [2024-11-09 05:12:00,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:12:00,507 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:12:00,519 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2024-11-09 05:12:00,520 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [58] [2024-11-09 05:12:00,521 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [164] [2024-11-09 05:12:00,521 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [215] [2024-11-09 05:12:00,521 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [581] [2024-11-09 05:12:00,521 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [679] [2024-11-09 05:12:00,521 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [871] [2024-11-09 05:12:00,522 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [906] [2024-11-09 05:12:00,526 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_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c[1605,1618] [2024-11-09 05:12:00,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:12:00,629 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:12:00,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00 WrapperNode [2024-11-09 05:12:00,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:12:00,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:12:00,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:12:00,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:12:00,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,681 INFO L138 Inliner]: procedures = 56, calls = 101, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 205 [2024-11-09 05:12:00,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:12:00,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:12:00,683 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:12:00,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:12:00,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,710 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,729 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:12:00,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:12:00,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:12:00,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:12:00,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (1/1) ... [2024-11-09 05:12:00,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:12:00,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:00,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:12:00,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:12:00,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:12:00,812 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 05:12:00,813 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 05:12:00,813 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:12:00,813 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:12:00,814 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:12:00,814 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:12:00,814 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:12:00,815 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:12:00,815 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 05:12:00,815 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 05:12:00,816 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-09 05:12:00,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-09 05:12:00,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:12:00,817 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 05:12:00,818 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 05:12:00,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:12:00,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:12:00,920 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:12:00,923 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:12:01,309 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-09 05:12:01,309 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:12:01,431 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:12:01,432 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:12:01,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:12:01 BoogieIcfgContainer [2024-11-09 05:12:01,432 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:12:01,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:12:01,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:12:01,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:12:01,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:12:00" (1/3) ... [2024-11-09 05:12:01,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af0c32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:12:01, skipping insertion in model container [2024-11-09 05:12:01,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:12:00" (2/3) ... [2024-11-09 05:12:01,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af0c32f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:12:01, skipping insertion in model container [2024-11-09 05:12:01,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:12:01" (3/3) ... [2024-11-09 05:12:01,441 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product38.cil.c [2024-11-09 05:12:01,460 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:12:01,460 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:12:01,516 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:12:01,523 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;@5bfd8a3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:12:01,523 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:12:01,530 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) [2024-11-09 05:12:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:12:01,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:01,542 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] [2024-11-09 05:12:01,543 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:01,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:01,550 INFO L85 PathProgramCache]: Analyzing trace with hash 897068953, now seen corresponding path program 1 times [2024-11-09 05:12:01,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:01,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639792002] [2024-11-09 05:12:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:01,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:12:01,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:01,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639792002] [2024-11-09 05:12:01,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639792002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:01,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:01,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:12:01,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833677689] [2024-11-09 05:12:01,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:01,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:12:01,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:01,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:12:01,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:12:01,799 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) [2024-11-09 05:12:01,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:01,884 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2024-11-09 05:12:01,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:12:01,888 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 [2024-11-09 05:12:01,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:01,897 INFO L225 Difference]: With dead ends: 114 [2024-11-09 05:12:01,898 INFO L226 Difference]: Without dead ends: 53 [2024-11-09 05:12:01,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:12:01,908 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:01,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:12:01,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-09 05:12:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-09 05:12:01,957 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) [2024-11-09 05:12:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-09 05:12:01,963 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 21 [2024-11-09 05:12:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:01,965 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-09 05:12:01,965 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) [2024-11-09 05:12:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-09 05:12:01,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 05:12:01,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:01,970 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] [2024-11-09 05:12:01,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:12:01,971 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:01,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1446885273, now seen corresponding path program 1 times [2024-11-09 05:12:01,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:01,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570751033] [2024-11-09 05:12:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:01,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:12:02,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570751033] [2024-11-09 05:12:02,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570751033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:02,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:02,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:12:02,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079170750] [2024-11-09 05:12:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:02,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:12:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:02,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:12:02,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:12:02,245 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:12:02,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:02,552 INFO L93 Difference]: Finished difference Result 146 states and 200 transitions. [2024-11-09 05:12:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:12:02,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-09 05:12:02,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:02,558 INFO L225 Difference]: With dead ends: 146 [2024-11-09 05:12:02,558 INFO L226 Difference]: Without dead ends: 95 [2024-11-09 05:12:02,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:12:02,562 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 43 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:02,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 254 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:12:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-09 05:12:02,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-09 05:12:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 69 states have internal predecessors, (78), 20 states have call successors, (20), 14 states have call predecessors, (20), 12 states have return successors, (26), 18 states have call predecessors, (26), 18 states have call successors, (26) [2024-11-09 05:12:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 124 transitions. [2024-11-09 05:12:02,607 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 124 transitions. Word has length 24 [2024-11-09 05:12:02,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:02,607 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 124 transitions. [2024-11-09 05:12:02,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:12:02,608 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 124 transitions. [2024-11-09 05:12:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 05:12:02,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:02,612 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] [2024-11-09 05:12:02,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:12:02,613 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:02,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:02,616 INFO L85 PathProgramCache]: Analyzing trace with hash 226793206, now seen corresponding path program 1 times [2024-11-09 05:12:02,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:02,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051749780] [2024-11-09 05:12:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:02,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:12:03,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:03,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051749780] [2024-11-09 05:12:03,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051749780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:03,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:03,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:12:03,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346714764] [2024-11-09 05:12:03,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:03,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:12:03,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:12:03,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:12:03,013 INFO L87 Difference]: Start difference. First operand 95 states and 124 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) [2024-11-09 05:12:03,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:03,298 INFO L93 Difference]: Finished difference Result 271 states and 360 transitions. [2024-11-09 05:12:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:12:03,299 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 [2024-11-09 05:12:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:03,303 INFO L225 Difference]: With dead ends: 271 [2024-11-09 05:12:03,305 INFO L226 Difference]: Without dead ends: 170 [2024-11-09 05:12:03,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:12:03,309 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 138 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:03,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 194 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:12:03,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-09 05:12:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 165. [2024-11-09 05:12:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 108 states have (on average 1.2407407407407407) internal successors, (134), 118 states have internal predecessors, (134), 34 states have call successors, (34), 24 states have call predecessors, (34), 22 states have return successors, (49), 31 states have call predecessors, (49), 31 states have call successors, (49) [2024-11-09 05:12:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 217 transitions. [2024-11-09 05:12:03,340 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 217 transitions. Word has length 32 [2024-11-09 05:12:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:03,341 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 217 transitions. [2024-11-09 05:12:03,341 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) [2024-11-09 05:12:03,342 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 217 transitions. [2024-11-09 05:12:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 05:12:03,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:03,344 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:03,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:12:03,344 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:03,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:03,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1428045840, now seen corresponding path program 1 times [2024-11-09 05:12:03,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:03,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435196165] [2024-11-09 05:12:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:03,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:12:03,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:03,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435196165] [2024-11-09 05:12:03,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435196165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:03,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:03,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:12:03,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288358083] [2024-11-09 05:12:03,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:03,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:12:03,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:03,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:12:03,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:12:03,746 INFO L87 Difference]: Start difference. First operand 165 states and 217 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) [2024-11-09 05:12:04,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:04,409 INFO L93 Difference]: Finished difference Result 420 states and 570 transitions. [2024-11-09 05:12:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 05:12:04,410 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 [2024-11-09 05:12:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:04,416 INFO L225 Difference]: With dead ends: 420 [2024-11-09 05:12:04,416 INFO L226 Difference]: Without dead ends: 291 [2024-11-09 05:12:04,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:12:04,420 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 190 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:04,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 279 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:12:04,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-09 05:12:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 271. [2024-11-09 05:12:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 179 states have (on average 1.2458100558659218) internal successors, (223), 196 states have internal predecessors, (223), 55 states have call successors, (55), 36 states have call predecessors, (55), 36 states have return successors, (81), 52 states have call predecessors, (81), 50 states have call successors, (81) [2024-11-09 05:12:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 359 transitions. [2024-11-09 05:12:04,486 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 359 transitions. Word has length 35 [2024-11-09 05:12:04,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:04,486 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 359 transitions. [2024-11-09 05:12:04,487 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) [2024-11-09 05:12:04,487 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 359 transitions. [2024-11-09 05:12:04,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 05:12:04,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:04,490 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:04,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:12:04,490 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:04,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:04,491 INFO L85 PathProgramCache]: Analyzing trace with hash 976494500, now seen corresponding path program 1 times [2024-11-09 05:12:04,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:04,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041419371] [2024-11-09 05:12:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:04,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:12:04,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041419371] [2024-11-09 05:12:04,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041419371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:04,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:04,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:12:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575621795] [2024-11-09 05:12:04,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:04,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:12:04,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:12:04,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:12:04,615 INFO L87 Difference]: Start difference. First operand 271 states and 359 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 05:12:04,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:04,695 INFO L93 Difference]: Finished difference Result 540 states and 732 transitions. [2024-11-09 05:12:04,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:12:04,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 52 [2024-11-09 05:12:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:04,701 INFO L225 Difference]: With dead ends: 540 [2024-11-09 05:12:04,701 INFO L226 Difference]: Without dead ends: 271 [2024-11-09 05:12:04,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:12:04,704 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:04,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 51 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:12:04,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-09 05:12:04,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-11-09 05:12:04,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 179 states have (on average 1.217877094972067) internal successors, (218), 196 states have internal predecessors, (218), 55 states have call successors, (55), 36 states have call predecessors, (55), 36 states have return successors, (81), 52 states have call predecessors, (81), 50 states have call successors, (81) [2024-11-09 05:12:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 354 transitions. [2024-11-09 05:12:04,781 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 354 transitions. Word has length 52 [2024-11-09 05:12:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:04,783 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 354 transitions. [2024-11-09 05:12:04,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 05:12:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 354 transitions. [2024-11-09 05:12:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 05:12:04,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:04,791 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] [2024-11-09 05:12:04,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:12:04,791 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:04,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:04,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1487776513, now seen corresponding path program 1 times [2024-11-09 05:12:04,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:04,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186713957] [2024-11-09 05:12:04,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:04,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:12:04,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:04,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186713957] [2024-11-09 05:12:04,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186713957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:04,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:04,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:12:04,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917510517] [2024-11-09 05:12:04,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:04,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:12:04,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:04,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:12:04,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:12:04,871 INFO L87 Difference]: Start difference. First operand 271 states and 354 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 05:12:04,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:04,934 INFO L93 Difference]: Finished difference Result 401 states and 509 transitions. [2024-11-09 05:12:04,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:12:04,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-11-09 05:12:04,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:04,937 INFO L225 Difference]: With dead ends: 401 [2024-11-09 05:12:04,938 INFO L226 Difference]: Without dead ends: 231 [2024-11-09 05:12:04,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:12:04,940 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 75 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 [2024-11-09 05:12:04,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 75 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:12:04,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-09 05:12:04,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-09 05:12:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 154 states have (on average 1.2207792207792207) internal successors, (188), 171 states have internal predecessors, (188), 40 states have call successors, (40), 31 states have call predecessors, (40), 36 states have return successors, (55), 42 states have call predecessors, (55), 40 states have call successors, (55) [2024-11-09 05:12:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 283 transitions. [2024-11-09 05:12:04,978 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 283 transitions. Word has length 58 [2024-11-09 05:12:04,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:04,979 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 283 transitions. [2024-11-09 05:12:04,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 05:12:04,980 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 283 transitions. [2024-11-09 05:12:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 05:12:04,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:04,985 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] [2024-11-09 05:12:04,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:12:04,985 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:04,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:04,986 INFO L85 PathProgramCache]: Analyzing trace with hash -947665919, now seen corresponding path program 1 times [2024-11-09 05:12:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:04,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546003323] [2024-11-09 05:12:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:04,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 05:12:05,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546003323] [2024-11-09 05:12:05,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546003323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499824593] [2024-11-09 05:12:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:05,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:05,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:05,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:05,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:12:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:05,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:12:05,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:12:05,328 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:12:05,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499824593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:05,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:12:05,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-09 05:12:05,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105984258] [2024-11-09 05:12:05,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:05,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:12:05,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:05,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:12:05,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:12:05,332 INFO L87 Difference]: Start difference. First operand 231 states and 283 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 05:12:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:05,417 INFO L93 Difference]: Finished difference Result 344 states and 426 transitions. [2024-11-09 05:12:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:12:05,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 60 [2024-11-09 05:12:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:05,420 INFO L225 Difference]: With dead ends: 344 [2024-11-09 05:12:05,420 INFO L226 Difference]: Without dead ends: 221 [2024-11-09 05:12:05,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:12:05,421 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 26 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:05,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 97 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:12:05,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-09 05:12:05,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2024-11-09 05:12:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 147 states have (on average 1.1904761904761905) internal successors, (175), 163 states have internal predecessors, (175), 38 states have call successors, (38), 31 states have call predecessors, (38), 35 states have return successors, (45), 39 states have call predecessors, (45), 38 states have call successors, (45) [2024-11-09 05:12:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 258 transitions. [2024-11-09 05:12:05,450 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 258 transitions. Word has length 60 [2024-11-09 05:12:05,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:05,451 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 258 transitions. [2024-11-09 05:12:05,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 05:12:05,451 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 258 transitions. [2024-11-09 05:12:05,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 05:12:05,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:05,452 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] [2024-11-09 05:12:05,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:12:05,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 05:12:05,657 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:05,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:05,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1775752616, now seen corresponding path program 1 times [2024-11-09 05:12:05,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:05,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91339803] [2024-11-09 05:12:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:05,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 05:12:05,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:05,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91339803] [2024-11-09 05:12:05,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91339803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:05,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288910338] [2024-11-09 05:12:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:05,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:05,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:05,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:05,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:12:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:05,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:12:05,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:12:06,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:12:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:12:06,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288910338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:12:06,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [520054676] [2024-11-09 05:12:06,237 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2024-11-09 05:12:06,237 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:12:06,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:12:06,247 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:12:06,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:12:09,252 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 17 for LOIs [2024-11-09 05:12:09,258 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 49 for LOIs [2024-11-09 05:12:10,155 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 1 for LOIs [2024-11-09 05:12:10,156 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 8 for LOIs [2024-11-09 05:12:10,186 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 11 for LOIs [2024-11-09 05:12:10,188 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:12:12,840 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6018#(and (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (exists ((|v_timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1_19| Int)) (and (<= |v_timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1_19| 2147483647) (not (= |v_timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1_19| 0)) (or (and (not (= 2 ~waterLevel~0)) (= |old(~pumpRunning~0)| 0) (= ~pumpRunning~0 |v_timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1_19|)) (and (= ~methaneLevelCritical~0 0) (not (= 2 ~waterLevel~0)) (= ~pumpRunning~0 |v_timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1_19|))) (<= 0 (+ |v_timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1_19| 2147483648)))) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-09 05:12:12,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:12:12,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:12:12,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 05:12:12,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346555443] [2024-11-09 05:12:12,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:12:12,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 05:12:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 05:12:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 05:12:12,851 INFO L87 Difference]: Start difference. First operand 221 states and 258 transitions. Second operand has 11 states, 8 states have (on average 8.375) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-09 05:12:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:13,646 INFO L93 Difference]: Finished difference Result 300 states and 352 transitions. [2024-11-09 05:12:13,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 05:12:13,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 8.375) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 63 [2024-11-09 05:12:13,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:13,648 INFO L225 Difference]: With dead ends: 300 [2024-11-09 05:12:13,649 INFO L226 Difference]: Without dead ends: 298 [2024-11-09 05:12:13,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 156 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 05:12:13,651 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 155 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:13,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 589 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:12:13,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-09 05:12:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 279. [2024-11-09 05:12:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 183 states have (on average 1.180327868852459) internal successors, (216), 205 states have internal predecessors, (216), 50 states have call successors, (50), 42 states have call predecessors, (50), 45 states have return successors, (61), 47 states have call predecessors, (61), 50 states have call successors, (61) [2024-11-09 05:12:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 327 transitions. [2024-11-09 05:12:13,701 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 327 transitions. Word has length 63 [2024-11-09 05:12:13,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:13,702 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 327 transitions. [2024-11-09 05:12:13,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 8.375) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-09 05:12:13,702 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 327 transitions. [2024-11-09 05:12:13,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 05:12:13,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:13,704 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:13,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:12:13,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 05:12:13,908 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:13,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:13,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1659561501, now seen corresponding path program 1 times [2024-11-09 05:12:13,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:13,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841137013] [2024-11-09 05:12:13,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:13,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 05:12:14,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:14,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841137013] [2024-11-09 05:12:14,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841137013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:12:14,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:12:14,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:12:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069759269] [2024-11-09 05:12:14,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:12:14,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:12:14,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:14,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:12:14,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:12:14,058 INFO L87 Difference]: Start difference. First operand 279 states and 327 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 05:12:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:14,301 INFO L93 Difference]: Finished difference Result 678 states and 798 transitions. [2024-11-09 05:12:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:12:14,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2024-11-09 05:12:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:14,305 INFO L225 Difference]: With dead ends: 678 [2024-11-09 05:12:14,306 INFO L226 Difference]: Without dead ends: 521 [2024-11-09 05:12:14,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:12:14,307 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 91 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:14,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 170 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:12:14,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-11-09 05:12:14,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 519. [2024-11-09 05:12:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 338 states have (on average 1.1715976331360947) internal successors, (396), 376 states have internal predecessors, (396), 95 states have call successors, (95), 81 states have call predecessors, (95), 85 states have return successors, (113), 88 states have call predecessors, (113), 95 states have call successors, (113) [2024-11-09 05:12:14,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 604 transitions. [2024-11-09 05:12:14,396 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 604 transitions. Word has length 80 [2024-11-09 05:12:14,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:14,397 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 604 transitions. [2024-11-09 05:12:14,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 05:12:14,398 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 604 transitions. [2024-11-09 05:12:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 05:12:14,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:14,400 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:14,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 05:12:14,401 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:14,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:14,401 INFO L85 PathProgramCache]: Analyzing trace with hash -581999117, now seen corresponding path program 1 times [2024-11-09 05:12:14,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:14,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588303056] [2024-11-09 05:12:14,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:14,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 05:12:14,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:14,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588303056] [2024-11-09 05:12:14,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588303056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:14,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480997369] [2024-11-09 05:12:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:14,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:14,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:14,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:14,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:12:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:14,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:12:14,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 58 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:12:14,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:12:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 05:12:15,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480997369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:12:15,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [263082532] [2024-11-09 05:12:15,287 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2024-11-09 05:12:15,287 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:12:15,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:12:15,288 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:12:15,288 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:12:21,355 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 18 for LOIs [2024-11-09 05:12:21,358 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 52 for LOIs [2024-11-09 05:12:21,734 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 3 for LOIs [2024-11-09 05:12:21,735 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 60 for LOIs [2024-11-09 05:12:21,807 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 23 for LOIs [2024-11-09 05:12:21,811 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:12:27,091 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9314#(and (not (= ~pumpRunning~0 0)) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= 2 ~waterLevel~0)) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-09 05:12:27,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:12:27,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:12:27,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2024-11-09 05:12:27,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599587173] [2024-11-09 05:12:27,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:12:27,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 05:12:27,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:27,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 05:12:27,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=2282, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 05:12:27,095 INFO L87 Difference]: Start difference. First operand 519 states and 604 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-09 05:12:28,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:28,587 INFO L93 Difference]: Finished difference Result 1490 states and 1898 transitions. [2024-11-09 05:12:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 05:12:28,588 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 83 [2024-11-09 05:12:28,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:28,598 INFO L225 Difference]: With dead ends: 1490 [2024-11-09 05:12:28,598 INFO L226 Difference]: Without dead ends: 981 [2024-11-09 05:12:28,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 209 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2038 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=604, Invalid=5096, Unknown=0, NotChecked=0, Total=5700 [2024-11-09 05:12:28,602 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 292 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:28,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 432 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:12:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2024-11-09 05:12:28,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 608. [2024-11-09 05:12:28,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 402 states have (on average 1.1393034825870647) internal successors, (458), 440 states have internal predecessors, (458), 101 states have call successors, (101), 93 states have call predecessors, (101), 104 states have return successors, (125), 104 states have call predecessors, (125), 101 states have call successors, (125) [2024-11-09 05:12:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 684 transitions. [2024-11-09 05:12:28,753 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 684 transitions. Word has length 83 [2024-11-09 05:12:28,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:28,755 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 684 transitions. [2024-11-09 05:12:28,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-09 05:12:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 684 transitions. [2024-11-09 05:12:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 05:12:28,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:12:28,760 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:28,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:12:28,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:28,961 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:12:28,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:12:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1381743577, now seen corresponding path program 1 times [2024-11-09 05:12:28,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:12:28,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933715786] [2024-11-09 05:12:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:28,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:12:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 05:12:29,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:12:29,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933715786] [2024-11-09 05:12:29,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933715786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:12:29,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025974644] [2024-11-09 05:12:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:12:29,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:29,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:12:29,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:12:29,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:12:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:12:29,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:12:29,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:12:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 55 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:12:30,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:12:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 05:12:30,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025974644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:12:30,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [698238836] [2024-11-09 05:12:30,582 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2024-11-09 05:12:30,583 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:12:30,583 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:12:30,583 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:12:30,583 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:12:32,881 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 22 for LOIs [2024-11-09 05:12:32,886 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 52 for LOIs [2024-11-09 05:12:33,329 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 3 for LOIs [2024-11-09 05:12:33,330 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 60 for LOIs [2024-11-09 05:12:33,442 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 23 for LOIs [2024-11-09 05:12:33,447 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:12:36,749 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13145#(and (not (= ~pumpRunning~0 0)) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= 2 ~waterLevel~0)) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-09 05:12:36,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:12:36,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:12:36,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 27 [2024-11-09 05:12:36,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907458991] [2024-11-09 05:12:36,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:12:36,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 05:12:36,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:12:36,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 05:12:36,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=2871, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 05:12:36,753 INFO L87 Difference]: Start difference. First operand 608 states and 684 transitions. Second operand has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 14 states have call successors, (26), 7 states have call predecessors, (26), 10 states have return successors, (25), 14 states have call predecessors, (25), 13 states have call successors, (25) [2024-11-09 05:12:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:12:39,633 INFO L93 Difference]: Finished difference Result 1599 states and 1871 transitions. [2024-11-09 05:12:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-09 05:12:39,633 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 14 states have call successors, (26), 7 states have call predecessors, (26), 10 states have return successors, (25), 14 states have call predecessors, (25), 13 states have call successors, (25) Word has length 88 [2024-11-09 05:12:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:12:39,635 INFO L225 Difference]: With dead ends: 1599 [2024-11-09 05:12:39,635 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:12:39,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 236 SyntacticMatches, 11 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4848 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1527, Invalid=11129, Unknown=0, NotChecked=0, Total=12656 [2024-11-09 05:12:39,643 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 1099 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 797 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:12:39,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 567 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [797 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 05:12:39,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:12:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:12:39,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:12:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:12:39,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2024-11-09 05:12:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:12:39,646 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:12:39,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 14 states have call successors, (26), 7 states have call predecessors, (26), 10 states have return successors, (25), 14 states have call predecessors, (25), 13 states have call successors, (25) [2024-11-09 05:12:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:12:39,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:12:39,649 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:12:39,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:12:39,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:12:39,852 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:12:39,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:12:54,861 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:12:54,957 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse6 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse7 (not .cse6)) (.cse8 (= ~methaneLevelCritical~0 0))) (and (let ((.cse1 (= 2 ~waterLevel~0)) (.cse0 (<= 1 ~pumpRunning~0)) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse2) (and .cse0 .cse4 .cse5 .cse2) (and .cse3 .cse6 (= ~waterLevel~0 1) .cse2) (and .cse3 .cse7 .cse4 (<= 1 ~switchedOnBeforeTS~0) .cse2))) (or .cse6 (not .cse8)) (or .cse7 .cse8)))) Eliminated clause: (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse5 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse6 (not .cse5)) (.cse7 (= ~methaneLevelCritical~0 0))) (and (let ((.cse1 (= 2 ~waterLevel~0)) (.cse0 (<= 1 ~pumpRunning~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse4 (<= ~waterLevel~0 2)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse1 .cse2) (and .cse3 .cse4 (= ~switchedOnBeforeTS~0 0) .cse2) (and .cse0 .cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse2) (and .cse3 .cse5 (= ~waterLevel~0 1) .cse2) (and .cse3 .cse6 .cse4 (<= 1 ~switchedOnBeforeTS~0) .cse2))) (or .cse5 (not .cse7)) (or .cse6 .cse7))))) [2024-11-09 05:12:54,976 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:12:55,031 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse12 (= |old(~pumpRunning~0)| 0)) (.cse9 (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (let ((.cse8 (<= 1 ~switchedOnBeforeTS~0)) (.cse6 (< |old(~switchedOnBeforeTS~0)| 1)) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (= |old(~waterLevel~0)| 2)) (.cse0 (not .cse9)) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse4 (= ~switchedOnBeforeTS~0 0)) (.cse7 (= 0 ~systemActive~0)) (.cse2 (not .cse12))) (and (or .cse0 (and .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (< |old(~pumpRunning~0)| 1)) (or .cse0 .cse2 (not .cse3) .cse4) (or .cse2 .cse5 .cse6 .cse7 .cse8) (or (and (or .cse8 .cse4) (= |old(~waterLevel~0)| ~waterLevel~0)) (and (or .cse0 .cse7) (or .cse2 .cse6 .cse7))) (or (and .cse1 (= 2 ~waterLevel~0)) (< |old(~waterLevel~0)| 2)) (let ((.cse10 (<= 1 |old(~pumpRunning~0)|)) (.cse11 (not .cse7))) (or (and .cse9 .cse10 .cse11) (and .cse12 .cse11 .cse3) (and .cse12 (<= |old(~waterLevel~0)| 1)) (and .cse10 .cse11 .cse3))) (or .cse0 .cse2 .cse5 .cse7 .cse4) (or (not (= |old(~waterLevel~0)| 1)) .cse7 (= ~waterLevel~0 1)) (or (< 1 |old(~waterLevel~0)|) .cse2 (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1)))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~switchedOnBeforeTS~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse13 (= |old(~pumpRunning~0)| 0)) (.cse10 (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (let ((.cse5 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= |old(~waterLevel~0)| 2)) (.cse0 (not (= |old(~switchedOnBeforeTS~0)| 0))) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse4 (not .cse10)) (.cse7 (< |old(~switchedOnBeforeTS~0)| 1)) (.cse8 (< 0 ~switchedOnBeforeTS~0)) (.cse3 (= ~switchedOnBeforeTS~0 0)) (.cse9 (= 0 ~systemActive~0)) (.cse1 (not .cse13))) (and (or .cse0 .cse1 (not .cse2) .cse3) (or .cse4 (and .cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (< |old(~pumpRunning~0)| 1)) (or .cse1 .cse6 .cse7 .cse8 .cse9) (or (and .cse5 (= 2 ~waterLevel~0)) (< |old(~waterLevel~0)| 2)) (let ((.cse11 (<= 1 |old(~pumpRunning~0)|)) (.cse12 (not .cse9))) (or (and .cse10 .cse11 .cse12) (and .cse13 .cse12 .cse2) (and .cse13 (<= |old(~waterLevel~0)| 1)) (and .cse11 .cse12 .cse2))) (or .cse0 .cse1 .cse6 .cse9 .cse3) (or (and (or .cse4 .cse9) (or .cse1 .cse7 .cse9)) (and (or .cse8 .cse3) (= |old(~waterLevel~0)| ~waterLevel~0))) (or (not (= |old(~waterLevel~0)| 1)) .cse9 (= ~waterLevel~0 1)) (or (< 1 |old(~waterLevel~0)|) .cse1 (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1))))))) [2024-11-09 05:12:55,129 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:12:55,146 WARN L162 FloydHoareUtils]: Requires clause for cleanup contained old-variable. Original clause: (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) (= |old(~pumpRunning~0)| 0) (<= |old(~waterLevel~0)| 1)) Eliminated clause: (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1)) [2024-11-09 05:12:55,162 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (let ((.cse1 (<= ~waterLevel~0 2)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse0 .cse1 .cse2) (and .cse1 (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|) (<= 1 |old(~pumpRunning~0)|) .cse2))) (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) Eliminated clause: (and (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (let ((.cse1 (<= ~waterLevel~0 2)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse0 .cse1 .cse2) (and .cse1 (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|) (<= 1 |old(~pumpRunning~0)|) .cse2)))))) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) [2024-11-09 05:12:55,170 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:12:55,181 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (= |old(~waterLevel~0)| ~waterLevel~0) (let ((.cse1 (= |old(~waterLevel~0)| 2)) (.cse3 (<= 1 ~pumpRunning~0)) (.cse5 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse4 (<= |old(~waterLevel~0)| 2)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and (or (and .cse0 .cse1) (and .cse0 (= |old(~waterLevel~0)| 1))) .cse2) (and .cse3 .cse2 .cse1) (and .cse3 .cse4 .cse5 .cse2) (and .cse0 .cse4 .cse5 .cse2) (and .cse0 (not (= ~methaneLevelCritical~0 0)) (<= 1 ~switchedOnBeforeTS~0) .cse4 .cse2)))) Eliminated clause: (let ((.cse0 (<= 1 ~pumpRunning~0)) (.cse4 (<= ~waterLevel~0 2)) (.cse1 (= 2 ~waterLevel~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse0 .cse1 .cse2) (and .cse3 (not (= ~methaneLevelCritical~0 0)) .cse4 (<= 1 ~switchedOnBeforeTS~0) .cse2) (and .cse3 .cse4 (= ~switchedOnBeforeTS~0 0) .cse2) (and .cse0 .cse4 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse2) (and (or (and .cse3 .cse1) (and .cse3 (= ~waterLevel~0 1))) .cse2))) [2024-11-09 05:12:55,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:12:55 BoogieIcfgContainer [2024-11-09 05:12:55,245 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:12:55,246 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:12:55,249 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:12:55,250 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:12:55,250 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:12:01" (3/4) ... [2024-11-09 05:12:55,252 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:12:55,261 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 05:12:55,262 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 05:12:55,262 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 05:12:55,262 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 05:12:55,266 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:12:55,266 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 05:12:55,266 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-11-09 05:12:55,281 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2024-11-09 05:12:55,282 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-09 05:12:55,282 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 05:12:55,283 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:12:55,283 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:12:55,337 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == 0) && (waterLevel <= 1)) && (\old(pumpRunning) == 0)) && (\old(waterLevel) <= 1)) [2024-11-09 05:12:55,383 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((pumpRunning == 0) && (waterLevel <= 1)) && (\old(pumpRunning) == 0)) && (\old(waterLevel) <= 1)) [2024-11-09 05:12:55,440 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:12:55,440 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:12:55,441 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:12:55,442 INFO L158 Benchmark]: Toolchain (without parser) took 55357.43ms. Allocated memory was 157.3MB in the beginning and 952.1MB in the end (delta: 794.8MB). Free memory was 119.5MB in the beginning and 379.8MB in the end (delta: -260.2MB). Peak memory consumption was 536.8MB. Max. memory is 16.1GB. [2024-11-09 05:12:55,444 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 111.1MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:12:55,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.49ms. Allocated memory is still 157.3MB. Free memory was 119.0MB in the beginning and 97.6MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 05:12:55,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.52ms. Allocated memory is still 157.3MB. Free memory was 97.6MB in the beginning and 95.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:12:55,445 INFO L158 Benchmark]: Boogie Preprocessor took 48.63ms. Allocated memory is still 157.3MB. Free memory was 95.5MB in the beginning and 93.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:12:55,445 INFO L158 Benchmark]: RCFGBuilder took 696.68ms. Allocated memory is still 157.3MB. Free memory was 93.9MB in the beginning and 121.5MB in the end (delta: -27.7MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2024-11-09 05:12:55,446 INFO L158 Benchmark]: TraceAbstraction took 53810.69ms. Allocated memory was 157.3MB in the beginning and 952.1MB in the end (delta: 794.8MB). Free memory was 121.5MB in the beginning and 388.2MB in the end (delta: -266.7MB). Peak memory consumption was 573.0MB. Max. memory is 16.1GB. [2024-11-09 05:12:55,446 INFO L158 Benchmark]: Witness Printer took 195.15ms. Allocated memory is still 952.1MB. Free memory was 388.2MB in the beginning and 379.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 05:12:55,448 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 111.1MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 543.49ms. Allocated memory is still 157.3MB. Free memory was 119.0MB in the beginning and 97.6MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.52ms. Allocated memory is still 157.3MB. Free memory was 97.6MB in the beginning and 95.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.63ms. Allocated memory is still 157.3MB. Free memory was 95.5MB in the beginning and 93.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 696.68ms. Allocated memory is still 157.3MB. Free memory was 93.9MB in the beginning and 121.5MB in the end (delta: -27.7MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * TraceAbstraction took 53810.69ms. Allocated memory was 157.3MB in the beginning and 952.1MB in the end (delta: 794.8MB). Free memory was 121.5MB in the beginning and 388.2MB in the end (delta: -266.7MB). Peak memory consumption was 573.0MB. Max. memory is 16.1GB. * Witness Printer took 195.15ms. Allocated memory is still 952.1MB. Free memory was 388.2MB in the beginning and 379.8MB 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,"Test.i","") [58] - GenericResultAtLocation [Line: 164]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [164] - GenericResultAtLocation [Line: 215]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [215] - GenericResultAtLocation [Line: 581]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [581] - GenericResultAtLocation [Line: 679]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [679] - GenericResultAtLocation [Line: 871]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [871] - GenericResultAtLocation [Line: 906]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [906] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 38.4s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2109 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2084 mSDsluCounter, 2765 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1990 mSDsCounter, 1201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3404 IncrementalHoareTripleChecker+Invalid, 4605 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1201 mSolverCounterUnsat, 775 mSDtfsCounter, 3404 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 972 GetRequests, 683 SyntacticMatches, 22 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7667 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=608occurred in iteration=10, InterpolantAutomatonStates: 158, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 419 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 890 NumberOfCodeBlocks, 890 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1106 ConstructedInterpolants, 0 QuantifiedInterpolants, 2763 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1146 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 593/666 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: 917]: Loop Invariant Derived loop invariant: ((((((((((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (0 != systemActive)) || ((((((pumpRunning == 0) && (2 == waterLevel)) && (methaneLevelCritical == 0)) && (splverifierCounter == 0)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || ((((((pumpRunning == 0) && (waterLevel <= 1)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || (((((1 <= pumpRunning) && (waterLevel <= 1)) && (splverifierCounter == 0)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) || ((((((pumpRunning == 0) && (2 == waterLevel)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || ((((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (waterLevel <= 1)) && (splverifierCounter == 0)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || ((((((pumpRunning == 0) && (waterLevel <= 1)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (1 <= switchedOnBeforeTS)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (2 == waterLevel)) && (splverifierCounter == 0)) && (0 != systemActive))) - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0) && (waterLevel <= 1)) && (\old(pumpRunning) == 0)) && (\old(waterLevel) <= 1)) - InvariantResult [Line: 916]: Location Invariant Derived location invariant: ((pumpRunning == 0) && (waterLevel <= 1)) - ProcedureContractResult [Line: 713]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive)) || ((((1 <= pumpRunning) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) Ensures: ((((((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive)) || ((((1 <= pumpRunning) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) && (((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 612]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Ensures: (((((((((((1 <= pumpRunning) && (2 == waterLevel)) && (0 != systemActive)) || (((pumpRunning == 0) && (2 == waterLevel)) && (0 != systemActive))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) || ((((pumpRunning == 0) && (\old(methaneLevelCritical) == 0)) && (waterLevel == 1)) && (0 != systemActive))) || (((((pumpRunning == 0) && (\old(methaneLevelCritical) != 0)) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (0 != systemActive))) && ((methaneLevelCritical == 0) || (\old(methaneLevelCritical) == 0))) && ((\old(methaneLevelCritical) != 0) || (methaneLevelCritical != 0))) && ((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (waterLevel == \old(waterLevel))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 686]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: ((((((((((((((\old(pumpRunning) != 0) || (\old(waterLevel) != 1)) || ((waterLevel == 1) && (switchedOnBeforeTS == 0))) || (0 == systemActive)) && (((((((((1 <= pumpRunning) && (2 == waterLevel)) && (\old(waterLevel) == 2)) || (\old(pumpRunning) != 0)) || (methaneLevelCritical == 0)) || (\old(switchedOnBeforeTS) < 1)) || ((((pumpRunning == 0) && (waterLevel <= 1)) && (\old(waterLevel) == waterLevel)) && (switchedOnBeforeTS == 0))) || (0 == systemActive)) || ((((pumpRunning == 0) && (2 == waterLevel)) && (switchedOnBeforeTS == 0)) && (\old(waterLevel) == 2)))) && ((((((\old(pumpRunning) != 0) || (methaneLevelCritical == 0)) || (((pumpRunning == 0) && (2 == waterLevel)) && (switchedOnBeforeTS == 0))) || ((1 <= pumpRunning) && (2 == waterLevel))) || (\old(waterLevel) != 2)) || (0 == systemActive))) && (((((((\old(switchedOnBeforeTS) != 0) || (\old(pumpRunning) != 0)) || (methaneLevelCritical != 0)) || (0 == systemActive)) && ((((\old(pumpRunning) != 0) || (\old(switchedOnBeforeTS) < 1)) || (methaneLevelCritical != 0)) || (0 == systemActive))) || (((1 <= pumpRunning) && (2 == waterLevel)) && (methaneLevelCritical == 0))) || ((\old(waterLevel) == waterLevel) && (switchedOnBeforeTS == 0)))) && (((((((\old(switchedOnBeforeTS) != 0) || (((1 <= pumpRunning) && (2 == waterLevel)) && (\old(waterLevel) == 2))) || (\old(pumpRunning) != 0)) || (methaneLevelCritical == 0)) || ((((pumpRunning == 0) && (waterLevel <= 1)) && (\old(waterLevel) == waterLevel)) && (switchedOnBeforeTS == 0))) || (0 == systemActive)) || ((((pumpRunning == 0) && (2 == waterLevel)) && (switchedOnBeforeTS == 0)) && (\old(waterLevel) == 2)))) && (((((pumpRunning == \old(pumpRunning)) && (((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel)))) && (pumpRunning == switchedOnBeforeTS)) || (methaneLevelCritical != 0)) || (\old(pumpRunning) < 1))) && ((((((\old(pumpRunning) != 0) || (((pumpRunning == 0) && (2 == waterLevel)) && (switchedOnBeforeTS == 0))) || ((1 <= pumpRunning) && (2 == waterLevel))) || (methaneLevelCritical != 0)) || (\old(waterLevel) != 2)) || (0 == systemActive))) && ((((((\old(pumpRunning) == 0) && (0 != systemActive)) && (\old(waterLevel) == 2)) || ((\old(pumpRunning) == 0) && (\old(waterLevel) <= 1))) || (((1 <= \old(pumpRunning)) && (0 != systemActive)) && (\old(waterLevel) == 2))) || ((((\old(switchedOnBeforeTS) == \old(pumpRunning)) && (\old(waterLevel) <= 2)) && (1 <= \old(pumpRunning))) && (0 != systemActive)))) && (((1 < \old(waterLevel)) || (\old(pumpRunning) != 0)) || ((pumpRunning == 0) && (waterLevel <= 1)))) && (((((pumpRunning == \old(pumpRunning)) && (((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel)))) && (pumpRunning == switchedOnBeforeTS)) || (\old(pumpRunning) < 1)) || (((pumpRunning == 0) && (((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel)))) && (1 <= switchedOnBeforeTS)))) && ((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (head == \old(head))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 61]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: ((pumpRunning == 0) && (waterLevel <= 1)) Ensures: (((\old(pumpRunning) == 0) && (\old(waterLevel) <= 1)) && ((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (head == \old(head))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 721]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Requires: (pumpRunning == switchedOnBeforeTS) Ensures: ((((((\old(pumpRunning) != 0) || (pumpRunning == 0)) || ((1 <= pumpRunning) && (2 == waterLevel))) && ((\old(pumpRunning) < 1) || (pumpRunning == switchedOnBeforeTS))) && (((((\old(pumpRunning) == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive)) || ((((waterLevel <= 2) && (switchedOnBeforeTS == \old(pumpRunning))) && (1 <= \old(pumpRunning))) && (0 != systemActive)))) && ((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 600]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((((((1 <= pumpRunning) && (2 == waterLevel)) && (0 != systemActive)) || (((((pumpRunning == 0) && (methaneLevelCritical != 0)) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (0 != systemActive))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) || ((((pumpRunning == 0) && (2 == waterLevel)) || ((pumpRunning == 0) && (waterLevel == 1))) && (0 != systemActive))) Ensures: (((((1 < \old(waterLevel)) || (((long long) \old(waterLevel) + 1) == waterLevel)) && ((2 == waterLevel) || (\old(waterLevel) != 2))) && ((((((((pumpRunning == 0) && (\old(waterLevel) == 2)) || ((pumpRunning == 0) && (\old(waterLevel) == 1))) && (0 != systemActive)) || ((((pumpRunning == 0) && (\old(waterLevel) <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || (((1 <= pumpRunning) && (0 != systemActive)) && (\old(waterLevel) == 2))) || ((((1 <= pumpRunning) && (\old(waterLevel) <= 2)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) || (((((pumpRunning == 0) && (methaneLevelCritical != 0)) && (1 <= switchedOnBeforeTS)) && (\old(waterLevel) <= 2)) && (0 != systemActive)))) && ((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 799]: Procedure Contract for isPumpRunning Derived contract for procedure isPumpRunning. Requires: ((((((((pumpRunning == 0) && (waterLevel == 1)) && (0 != systemActive)) || (((1 <= pumpRunning) && (2 == waterLevel)) && (0 != systemActive))) || (((pumpRunning == 0) && (2 == waterLevel)) && (0 != systemActive))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0)) && (0 != systemActive))) || ((((pumpRunning == 0) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (0 != systemActive))) || ((((1 <= pumpRunning) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) && (0 != systemActive))) Ensures: (((((((((((1 <= pumpRunning) && (waterLevel <= 2)) && (pumpRunning == switchedOnBeforeTS)) || ((1 <= pumpRunning) && (2 == waterLevel))) || ((pumpRunning == 0) && (2 == waterLevel))) || (((pumpRunning == 0) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS))) || ((pumpRunning == 0) && (waterLevel == 1))) || (((pumpRunning == 0) && (waterLevel <= 2)) && (switchedOnBeforeTS == 0))) && (pumpRunning == \result)) && (0 != systemActive)) && (((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:12:55,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6c8b2e4-1ae5-4a43-9631-d4e82ee12f5f/bin/utaipan-verify-YMUCfTKeje/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