./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product51.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_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/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_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/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_365d00a6-fe14-4a0a-8738-e3cde850886c/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 2165aefdca75c2370f155996346c5c4ea8ed352d96946243b70bd7ef162ab29f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:50:15,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:50:15,822 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:50:15,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:50:15,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:50:15,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:50:15,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:50:15,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:50:15,875 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:50:15,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:50:15,877 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:50:15,877 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:50:15,877 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:50:15,878 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:50:15,878 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:50:15,878 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:50:15,881 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:50:15,881 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:50:15,882 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:50:15,882 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:50:15,882 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:50:15,887 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:50:15,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:50:15,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:50:15,888 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:50:15,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:50:15,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:50:15,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:50:15,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:50:15,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:50:15,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:50:15,890 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:50:15,890 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:50:15,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:50:15,891 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:50:15,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:50:15,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:50:15,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:50:15,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:50:15,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:50:15,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:50:15,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:50:15,895 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:50:15,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:50:15,895 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:50:15,896 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:50:15,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:50:15,896 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_365d00a6-fe14-4a0a-8738-e3cde850886c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2165aefdca75c2370f155996346c5c4ea8ed352d96946243b70bd7ef162ab29f [2024-11-09 05:50:16,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:50:16,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:50:16,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:50:16,223 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:50:16,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:50:16,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c Unable to find full path for "g++" [2024-11-09 05:50:18,297 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:50:18,595 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:50:18,595 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c [2024-11-09 05:50:18,610 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/data/00a844597/c526ad9628b648d9bf070c8921824e5f/FLAG715ad82ef [2024-11-09 05:50:18,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/data/00a844597/c526ad9628b648d9bf070c8921824e5f [2024-11-09 05:50:18,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:50:18,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:50:18,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:50:18,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:50:18,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:50:18,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:50:18" (1/1) ... [2024-11-09 05:50:18,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730b0830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:18, skipping insertion in model container [2024-11-09 05:50:18,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:50:18" (1/1) ... [2024-11-09 05:50:18,704 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:50:19,048 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_365d00a6-fe14-4a0a-8738-e3cde850886c/sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c[8940,8953] [2024-11-09 05:50:19,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:50:19,117 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:50:19,127 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [49] [2024-11-09 05:50:19,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [153] [2024-11-09 05:50:19,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [182] [2024-11-09 05:50:19,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [290] [2024-11-09 05:50:19,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [325] [2024-11-09 05:50:19,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [540] [2024-11-09 05:50:19,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [607] [2024-11-09 05:50:19,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [616] [2024-11-09 05:50:19,156 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_365d00a6-fe14-4a0a-8738-e3cde850886c/sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c[8940,8953] [2024-11-09 05:50:19,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:50:19,227 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:50:19,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19 WrapperNode [2024-11-09 05:50:19,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:50:19,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:50:19,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:50:19,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:50:19,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (1/1) ... [2024-11-09 05:50:19,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (1/1) ... [2024-11-09 05:50:19,306 INFO L138 Inliner]: procedures = 56, calls = 100, calls flagged for inlining = 24, calls inlined = 20, statements flattened = 206 [2024-11-09 05:50:19,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:50:19,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:50:19,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:50:19,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:50:19,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (1/1) ... [2024-11-09 05:50:19,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (1/1) ... [2024-11-09 05:50:19,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (1/1) ... [2024-11-09 05:50:19,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (1/1) ... [2024-11-09 05:50:19,333 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (1/1) ... [2024-11-09 05:50:19,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (1/1) ... [2024-11-09 05:50:19,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (1/1) ... [2024-11-09 05:50:19,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (1/1) ... [2024-11-09 05:50:19,353 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:50:19,354 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:50:19,354 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:50:19,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:50:19,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (1/1) ... [2024-11-09 05:50:19,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:50:19,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:19,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:50:19,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:50:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:50:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 05:50:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 05:50:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 05:50:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 05:50:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 05:50:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 05:50:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:50:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:50:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 05:50:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 05:50:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-09 05:50:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-09 05:50:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:50:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 05:50:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 05:50:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:50:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:50:19,525 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:50:19,527 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:50:19,833 INFO L? ?]: Removed 46 outVars from TransFormulas that were not future-live. [2024-11-09 05:50:19,833 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:50:19,972 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:50:19,973 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:50:19,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:50:19 BoogieIcfgContainer [2024-11-09 05:50:19,973 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:50:19,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:50:19,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:50:19,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:50:19,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:50:18" (1/3) ... [2024-11-09 05:50:19,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6aeed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:50:19, skipping insertion in model container [2024-11-09 05:50:19,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:50:19" (2/3) ... [2024-11-09 05:50:19,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6aeed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:50:19, skipping insertion in model container [2024-11-09 05:50:19,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:50:19" (3/3) ... [2024-11-09 05:50:19,982 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2024-11-09 05:50:20,000 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:50:20,000 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:50:20,063 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:50:20,071 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;@41aa001b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:50:20,072 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:50:20,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 05:50:20,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:50:20,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:20,083 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:50:20,084 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:20,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1347117679, now seen corresponding path program 1 times [2024-11-09 05:50:20,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:20,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261342633] [2024-11-09 05:50:20,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:20,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:20,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:20,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261342633] [2024-11-09 05:50:20,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261342633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:20,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:50:20,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:50:20,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546846051] [2024-11-09 05:50:20,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:20,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:50:20,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:50:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:50:20,305 INFO L87 Difference]: Start difference. First operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:50:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:20,380 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2024-11-09 05:50:20,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:50:20,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 05:50:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:20,391 INFO L225 Difference]: With dead ends: 116 [2024-11-09 05:50:20,392 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 05:50:20,395 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 05:50:20,398 INFO L432 NwaCegarLoop]: 60 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, 60 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:20,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:50:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 05:50:20,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-09 05:50:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-09 05:50:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2024-11-09 05:50:20,442 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 12 [2024-11-09 05:50:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:20,442 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2024-11-09 05:50:20,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:50:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2024-11-09 05:50:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:50:20,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:20,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:50:20,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:50:20,445 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:20,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:20,446 INFO L85 PathProgramCache]: Analyzing trace with hash -883177143, now seen corresponding path program 1 times [2024-11-09 05:50:20,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:20,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377388560] [2024-11-09 05:50:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:20,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:20,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:20,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377388560] [2024-11-09 05:50:20,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377388560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:20,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:50:20,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:50:20,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454759034] [2024-11-09 05:50:20,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:20,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:50:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:20,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:50:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:50:20,551 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:50:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:20,597 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2024-11-09 05:50:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:50:20,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 05:50:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:20,599 INFO L225 Difference]: With dead ends: 80 [2024-11-09 05:50:20,599 INFO L226 Difference]: Without dead ends: 46 [2024-11-09 05:50:20,600 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 05:50:20,601 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 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 05:50:20,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 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 05:50:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-09 05:50:20,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-09 05:50:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.4) internal successors, (42), 38 states have internal predecessors, (42), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 05:50:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2024-11-09 05:50:20,619 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 13 [2024-11-09 05:50:20,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:20,620 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2024-11-09 05:50:20,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:50:20,620 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2024-11-09 05:50:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 05:50:20,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:20,622 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:50:20,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:50:20,623 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:20,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:20,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2093577631, now seen corresponding path program 1 times [2024-11-09 05:50:20,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:20,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999148838] [2024-11-09 05:50:20,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:20,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:20,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:20,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999148838] [2024-11-09 05:50:20,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999148838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:20,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:50:20,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:50:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374750038] [2024-11-09 05:50:20,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:20,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:50:20,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:20,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:50:20,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:50:20,783 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:50:20,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:20,876 INFO L93 Difference]: Finished difference Result 134 states and 177 transitions. [2024-11-09 05:50:20,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:50:20,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 05:50:20,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:20,879 INFO L225 Difference]: With dead ends: 134 [2024-11-09 05:50:20,879 INFO L226 Difference]: Without dead ends: 90 [2024-11-09 05:50:20,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:50:20,881 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 47 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:20,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 95 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:20,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-09 05:50:20,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2024-11-09 05:50:20,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 71 states have internal predecessors, (79), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (18), 11 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-09 05:50:20,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 115 transitions. [2024-11-09 05:50:20,900 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 115 transitions. Word has length 16 [2024-11-09 05:50:20,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:20,900 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 115 transitions. [2024-11-09 05:50:20,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:50:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 115 transitions. [2024-11-09 05:50:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 05:50:20,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:20,902 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:50:20,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:50:20,903 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:20,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:20,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1791540011, now seen corresponding path program 1 times [2024-11-09 05:50:20,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:20,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627488134] [2024-11-09 05:50:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:20,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:21,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:21,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627488134] [2024-11-09 05:50:21,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627488134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:21,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:50:21,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:50:21,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823312547] [2024-11-09 05:50:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:21,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:50:21,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:21,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:50:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:50:21,090 INFO L87 Difference]: Start difference. First operand 87 states and 115 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:50:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:21,257 INFO L93 Difference]: Finished difference Result 234 states and 319 transitions. [2024-11-09 05:50:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:50:21,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 05:50:21,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:21,260 INFO L225 Difference]: With dead ends: 234 [2024-11-09 05:50:21,264 INFO L226 Difference]: Without dead ends: 149 [2024-11-09 05:50:21,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:50:21,266 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 31 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:21,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 129 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:21,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-09 05:50:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2024-11-09 05:50:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 101 states have (on average 1.3366336633663367) internal successors, (135), 116 states have internal predecessors, (135), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (32), 21 states have call predecessors, (32), 24 states have call successors, (32) [2024-11-09 05:50:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 191 transitions. [2024-11-09 05:50:21,317 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 191 transitions. Word has length 19 [2024-11-09 05:50:21,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:21,317 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 191 transitions. [2024-11-09 05:50:21,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:50:21,318 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 191 transitions. [2024-11-09 05:50:21,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 05:50:21,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:21,319 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:50:21,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:50:21,321 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:21,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:21,322 INFO L85 PathProgramCache]: Analyzing trace with hash 767142643, now seen corresponding path program 1 times [2024-11-09 05:50:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:21,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613043174] [2024-11-09 05:50:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:21,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:21,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:21,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613043174] [2024-11-09 05:50:21,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613043174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:21,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:50:21,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:50:21,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32818070] [2024-11-09 05:50:21,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:21,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:50:21,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:21,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:50:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:50:21,536 INFO L87 Difference]: Start difference. First operand 148 states and 191 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:50:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:21,719 INFO L93 Difference]: Finished difference Result 410 states and 533 transitions. [2024-11-09 05:50:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:50:21,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-09 05:50:21,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:21,722 INFO L225 Difference]: With dead ends: 410 [2024-11-09 05:50:21,722 INFO L226 Difference]: Without dead ends: 264 [2024-11-09 05:50:21,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:50:21,728 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 54 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:21,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 187 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-09 05:50:21,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 248. [2024-11-09 05:50:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 175 states have (on average 1.3085714285714285) internal successors, (229), 195 states have internal predecessors, (229), 35 states have call successors, (35), 33 states have call predecessors, (35), 37 states have return successors, (47), 36 states have call predecessors, (47), 35 states have call successors, (47) [2024-11-09 05:50:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 311 transitions. [2024-11-09 05:50:21,790 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 311 transitions. Word has length 24 [2024-11-09 05:50:21,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:21,790 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 311 transitions. [2024-11-09 05:50:21,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:50:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 311 transitions. [2024-11-09 05:50:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 05:50:21,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:21,792 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:50:21,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:50:21,793 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:21,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:21,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1350704587, now seen corresponding path program 1 times [2024-11-09 05:50:21,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:21,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045717358] [2024-11-09 05:50:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:21,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:22,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:22,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045717358] [2024-11-09 05:50:22,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045717358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:22,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:50:22,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 05:50:22,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8150604] [2024-11-09 05:50:22,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:22,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:50:22,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:22,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:50:22,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:50:22,092 INFO L87 Difference]: Start difference. First operand 248 states and 311 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:50:22,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:22,641 INFO L93 Difference]: Finished difference Result 631 states and 826 transitions. [2024-11-09 05:50:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:50:22,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-09 05:50:22,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:22,646 INFO L225 Difference]: With dead ends: 631 [2024-11-09 05:50:22,646 INFO L226 Difference]: Without dead ends: 485 [2024-11-09 05:50:22,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:50:22,648 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 211 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:22,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 244 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:50:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-11-09 05:50:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 436. [2024-11-09 05:50:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 308 states have (on average 1.2954545454545454) internal successors, (399), 344 states have internal predecessors, (399), 62 states have call successors, (62), 54 states have call predecessors, (62), 65 states have return successors, (86), 64 states have call predecessors, (86), 62 states have call successors, (86) [2024-11-09 05:50:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 547 transitions. [2024-11-09 05:50:22,708 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 547 transitions. Word has length 27 [2024-11-09 05:50:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:22,709 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 547 transitions. [2024-11-09 05:50:22,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:50:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 547 transitions. [2024-11-09 05:50:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 05:50:22,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:22,712 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:50:22,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:50:22,712 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:22,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash -291011928, now seen corresponding path program 1 times [2024-11-09 05:50:22,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:22,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353708233] [2024-11-09 05:50:22,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:22,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:22,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:22,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353708233] [2024-11-09 05:50:22,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353708233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:22,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:50:22,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:50:22,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62618042] [2024-11-09 05:50:22,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:22,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:50:22,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:22,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:50:22,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:50:22,759 INFO L87 Difference]: Start difference. First operand 436 states and 547 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:50:22,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:22,900 INFO L93 Difference]: Finished difference Result 540 states and 681 transitions. [2024-11-09 05:50:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:50:22,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-11-09 05:50:22,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:22,902 INFO L225 Difference]: With dead ends: 540 [2024-11-09 05:50:22,902 INFO L226 Difference]: Without dead ends: 193 [2024-11-09 05:50:22,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:50:22,904 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 78 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:22,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 104 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:22,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-09 05:50:22,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2024-11-09 05:50:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 127 states have (on average 1.2283464566929134) internal successors, (156), 143 states have internal predecessors, (156), 26 states have call successors, (26), 23 states have call predecessors, (26), 28 states have return successors, (37), 26 states have call predecessors, (37), 26 states have call successors, (37) [2024-11-09 05:50:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 219 transitions. [2024-11-09 05:50:22,934 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 219 transitions. Word has length 41 [2024-11-09 05:50:22,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:22,934 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 219 transitions. [2024-11-09 05:50:22,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:50:22,935 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 219 transitions. [2024-11-09 05:50:22,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 05:50:22,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:22,936 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:50:22,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:50:22,937 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:22,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:22,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1723036870, now seen corresponding path program 1 times [2024-11-09 05:50:22,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:22,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657250130] [2024-11-09 05:50:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:22,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:50:23,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:23,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657250130] [2024-11-09 05:50:23,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657250130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:50:23,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183119053] [2024-11-09 05:50:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:23,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:23,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:23,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:50:23,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:50:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:23,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:50:23,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:50:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:23,477 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:50:23,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183119053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:23,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:50:23,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-09 05:50:23,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799412206] [2024-11-09 05:50:23,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:23,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:50:23,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:23,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:50:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:50:23,483 INFO L87 Difference]: Start difference. First operand 182 states and 219 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:50:23,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:23,579 INFO L93 Difference]: Finished difference Result 265 states and 325 transitions. [2024-11-09 05:50:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:50:23,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2024-11-09 05:50:23,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:23,581 INFO L225 Difference]: With dead ends: 265 [2024-11-09 05:50:23,581 INFO L226 Difference]: Without dead ends: 181 [2024-11-09 05:50:23,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:50:23,583 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 25 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:23,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 90 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:23,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-09 05:50:23,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-09 05:50:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 127 states have (on average 1.204724409448819) internal successors, (153), 142 states have internal predecessors, (153), 25 states have call successors, (25), 23 states have call predecessors, (25), 28 states have return successors, (33), 26 states have call predecessors, (33), 25 states have call successors, (33) [2024-11-09 05:50:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 211 transitions. [2024-11-09 05:50:23,611 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 211 transitions. Word has length 46 [2024-11-09 05:50:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:23,612 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 211 transitions. [2024-11-09 05:50:23,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:50:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 211 transitions. [2024-11-09 05:50:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 05:50:23,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:23,614 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:50:23,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:50:23,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:23,815 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:23,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:23,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1296695058, now seen corresponding path program 1 times [2024-11-09 05:50:23,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:23,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865307219] [2024-11-09 05:50:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:23,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:50:24,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865307219] [2024-11-09 05:50:24,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865307219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:50:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222403379] [2024-11-09 05:50:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:24,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:24,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:24,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:50:24,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:50:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:24,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:50:24,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:50:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:25,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:50:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 05:50:25,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222403379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:50:25,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [886244052] [2024-11-09 05:50:25,525 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2024-11-09 05:50:25,525 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:50:25,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:50:25,535 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:50:25,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:50:34,333 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 142 for LOIs [2024-11-09 05:50:34,441 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 18 for LOIs [2024-11-09 05:50:34,529 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 28 for LOIs [2024-11-09 05:50:34,593 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 20 for LOIs [2024-11-09 05:50:34,596 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:50:38,940 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6135#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0))' at error location [2024-11-09 05:50:38,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:50:38,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:50:38,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 10] total 28 [2024-11-09 05:50:38,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660502387] [2024-11-09 05:50:38,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:50:38,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 05:50:38,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 05:50:38,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=2172, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 05:50:38,945 INFO L87 Difference]: Start difference. First operand 181 states and 211 transitions. Second operand has 28 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 12 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-09 05:50:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:42,650 INFO L93 Difference]: Finished difference Result 480 states and 576 transitions. [2024-11-09 05:50:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-09 05:50:42,651 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 12 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) Word has length 52 [2024-11-09 05:50:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:42,653 INFO L225 Difference]: With dead ends: 480 [2024-11-09 05:50:42,653 INFO L226 Difference]: Without dead ends: 399 [2024-11-09 05:50:42,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 119 SyntacticMatches, 10 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5181 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2150, Invalid=12856, Unknown=0, NotChecked=0, Total=15006 [2024-11-09 05:50:42,663 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 802 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:42,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 749 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 05:50:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-11-09 05:50:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 204. [2024-11-09 05:50:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 145 states have (on average 1.2) internal successors, (174), 159 states have internal predecessors, (174), 26 states have call successors, (26), 25 states have call predecessors, (26), 32 states have return successors, (34), 30 states have call predecessors, (34), 26 states have call successors, (34) [2024-11-09 05:50:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 234 transitions. [2024-11-09 05:50:42,696 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 234 transitions. Word has length 52 [2024-11-09 05:50:42,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:42,696 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 234 transitions. [2024-11-09 05:50:42,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 12 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-09 05:50:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 234 transitions. [2024-11-09 05:50:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 05:50:42,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:42,698 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:50:42,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:50:42,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:42,899 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:42,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:42,899 INFO L85 PathProgramCache]: Analyzing trace with hash -542447596, now seen corresponding path program 1 times [2024-11-09 05:50:42,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:42,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785949437] [2024-11-09 05:50:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:42,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:50:43,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:43,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785949437] [2024-11-09 05:50:43,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785949437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:50:43,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108821998] [2024-11-09 05:50:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:43,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:43,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:43,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:50:43,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:50:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:43,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:50:43,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:50:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:50:43,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:50:43,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108821998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:43,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:50:43,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-09 05:50:43,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647319299] [2024-11-09 05:50:43,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:43,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:50:43,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:43,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:50:43,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 05:50:43,534 INFO L87 Difference]: Start difference. First operand 204 states and 234 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 05:50:43,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:43,899 INFO L93 Difference]: Finished difference Result 439 states and 521 transitions. [2024-11-09 05:50:43,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:50:43,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 49 [2024-11-09 05:50:43,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:43,902 INFO L225 Difference]: With dead ends: 439 [2024-11-09 05:50:43,902 INFO L226 Difference]: Without dead ends: 266 [2024-11-09 05:50:43,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:50:43,903 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 89 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:43,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 171 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:50:43,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-09 05:50:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 244. [2024-11-09 05:50:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 176 states have (on average 1.2045454545454546) internal successors, (212), 190 states have internal predecessors, (212), 34 states have call successors, (34), 32 states have call predecessors, (34), 33 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-09 05:50:43,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 286 transitions. [2024-11-09 05:50:43,946 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 286 transitions. Word has length 49 [2024-11-09 05:50:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:43,946 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 286 transitions. [2024-11-09 05:50:43,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 05:50:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 286 transitions. [2024-11-09 05:50:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 05:50:43,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:43,948 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 05:50:43,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:50:44,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:50:44,150 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:44,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:44,150 INFO L85 PathProgramCache]: Analyzing trace with hash 314177029, now seen corresponding path program 1 times [2024-11-09 05:50:44,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:44,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277468271] [2024-11-09 05:50:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:44,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:50:44,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:44,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277468271] [2024-11-09 05:50:44,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277468271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:50:44,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193749203] [2024-11-09 05:50:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:44,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:44,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:44,929 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:50:44,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:50:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:45,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:50:45,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:50:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-09 05:50:45,145 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:50:45,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193749203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:50:45,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:50:45,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 21 [2024-11-09 05:50:45,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128740644] [2024-11-09 05:50:45,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:50:45,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:50:45,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:45,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:50:45,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:50:45,147 INFO L87 Difference]: Start difference. First operand 244 states and 286 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:50:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:50:45,293 INFO L93 Difference]: Finished difference Result 472 states and 559 transitions. [2024-11-09 05:50:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:50:45,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2024-11-09 05:50:45,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:50:45,296 INFO L225 Difference]: With dead ends: 472 [2024-11-09 05:50:45,296 INFO L226 Difference]: Without dead ends: 259 [2024-11-09 05:50:45,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-09 05:50:45,300 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 21 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:50:45,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 194 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:50:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-09 05:50:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 243. [2024-11-09 05:50:45,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 175 states have (on average 1.1942857142857144) internal successors, (209), 189 states have internal predecessors, (209), 34 states have call successors, (34), 32 states have call predecessors, (34), 33 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-09 05:50:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 283 transitions. [2024-11-09 05:50:45,347 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 283 transitions. Word has length 69 [2024-11-09 05:50:45,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:50:45,347 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 283 transitions. [2024-11-09 05:50:45,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 05:50:45,348 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 283 transitions. [2024-11-09 05:50:45,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 05:50:45,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:50:45,350 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:50:45,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:50:45,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:45,551 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:50:45,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:50:45,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1733088578, now seen corresponding path program 1 times [2024-11-09 05:50:45,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:50:45,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737052192] [2024-11-09 05:50:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:45,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:50:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 44 proven. 52 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 05:50:46,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:50:46,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737052192] [2024-11-09 05:50:46,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737052192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:50:46,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095234506] [2024-11-09 05:50:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:50:46,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:50:46,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:50:46,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:50:46,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:50:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:50:46,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 05:50:46,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:50:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 54 proven. 38 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:50:47,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:50:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 67 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 05:50:48,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095234506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:50:48,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1637311987] [2024-11-09 05:50:48,147 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2024-11-09 05:50:48,148 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:50:48,149 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:50:48,149 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:50:48,150 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:50:53,877 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 142 for LOIs [2024-11-09 05:50:53,965 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 18 for LOIs [2024-11-09 05:50:54,082 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 28 for LOIs [2024-11-09 05:50:54,139 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 20 for LOIs [2024-11-09 05:50:54,142 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 23 for LOIs [2024-11-09 05:50:54,146 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:50:58,808 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10319#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~waterLevel~0 0))' at error location [2024-11-09 05:50:58,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:50:58,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:50:58,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 39 [2024-11-09 05:50:58,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880866121] [2024-11-09 05:50:58,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:50:58,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-09 05:50:58,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:50:58,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-09 05:50:58,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=3534, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 05:50:58,813 INFO L87 Difference]: Start difference. First operand 243 states and 283 transitions. Second operand has 39 states, 36 states have (on average 4.416666666666667) internal successors, (159), 37 states have internal predecessors, (159), 19 states have call successors, (24), 8 states have call predecessors, (24), 16 states have return successors, (25), 18 states have call predecessors, (25), 19 states have call successors, (25) [2024-11-09 05:51:00,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:51:00,214 INFO L93 Difference]: Finished difference Result 364 states and 431 transitions. [2024-11-09 05:51:00,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 05:51:00,216 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 4.416666666666667) internal successors, (159), 37 states have internal predecessors, (159), 19 states have call successors, (24), 8 states have call predecessors, (24), 16 states have return successors, (25), 18 states have call predecessors, (25), 19 states have call successors, (25) Word has length 94 [2024-11-09 05:51:00,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:51:00,217 INFO L225 Difference]: With dead ends: 364 [2024-11-09 05:51:00,218 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:51:00,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 235 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2720 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1153, Invalid=6157, Unknown=0, NotChecked=0, Total=7310 [2024-11-09 05:51:00,221 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 542 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:51:00,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 479 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:51:00,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:51:00,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:51:00,226 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 05:51:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:51:00,227 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2024-11-09 05:51:00,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:51:00,227 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:51:00,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 4.416666666666667) internal successors, (159), 37 states have internal predecessors, (159), 19 states have call successors, (24), 8 states have call predecessors, (24), 16 states have return successors, (25), 18 states have call predecessors, (25), 19 states have call successors, (25) [2024-11-09 05:51:00,228 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:51:00,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:51:00,231 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:51:00,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:51:00,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:51:00,437 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:51:00,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:51:03,566 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:51:03,587 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (let ((.cse0 (= ~waterLevel~0 1)) (.cse1 (= 1 ~systemActive~0))) (and (or (not .cse0) (not .cse1) (not (= |old(~pumpRunning~0)| 1)) (= ~pumpRunning~0 1)) (let ((.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse0 .cse2) (and (<= 2 ~waterLevel~0) .cse2) .cse1)))) Eliminated clause: (let ((.cse0 (not (= 0 ~systemActive~0)))) (or (and (= ~waterLevel~0 1) .cse0) (and (<= 2 ~waterLevel~0) .cse0) (= 1 ~systemActive~0))) [2024-11-09 05:51:03,606 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (< |old(~waterLevel~0)| 2) .cse0) (or (not .cse1) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse2 (= 1 ~systemActive~0)) (.cse3 (= |old(~waterLevel~0)| 2))) (or (and .cse2 (= |old(~pumpRunning~0)| 1) .cse3) (and (= |old(~waterLevel~0)| 1) .cse2 .cse1) (and .cse1 (= 0 ~systemActive~0)) (and .cse2 .cse1 .cse3))) (or .cse0 (= ~waterLevel~0 1)))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (< |old(~waterLevel~0)| 2) .cse0) (or (not .cse1) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse2 (= 1 ~systemActive~0)) (.cse3 (= |old(~waterLevel~0)| 2))) (or (and .cse2 (= |old(~pumpRunning~0)| 1) .cse3) (and (= |old(~waterLevel~0)| 1) .cse2 .cse1) (and .cse1 (= 0 ~systemActive~0)) (and .cse2 .cse1 .cse3))) (or .cse0 (= ~waterLevel~0 1))))) [2024-11-09 05:51:03,615 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:51:03,619 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (and (= ~pumpRunning~0 0) (or (= 2 ~waterLevel~0) (= ~waterLevel~0 1)) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0)) Eliminated clause: (and (= ~pumpRunning~0 0) (or (= 2 ~waterLevel~0) (= ~waterLevel~0 1)) (= 1 ~systemActive~0)) [2024-11-09 05:51:03,626 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (let ((.cse1 (= ~pumpRunning~0 1))) (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 0))) (or (and .cse0 .cse1) (and .cse2 (= |old(~waterLevel~0)| 1) .cse0) (and .cse2 (= 0 ~systemActive~0)))) (or (= |old(~waterLevel~0)| ~waterLevel~0) (= ~waterLevel~0 1)) (or (= 2 ~waterLevel~0) (not .cse1)))) Eliminated clause: (let ((.cse1 (= ~pumpRunning~0 1))) (and (exists ((|old(~waterLevel~0)| Int)) (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 0))) (or (and .cse0 .cse1) (and .cse2 (= |old(~waterLevel~0)| 1) .cse0) (and .cse2 (= 0 ~systemActive~0)))) (or (= |old(~waterLevel~0)| ~waterLevel~0) (= ~waterLevel~0 1)))) (or (= 2 ~waterLevel~0) (not .cse1)))) [2024-11-09 05:51:03,630 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 05:51:03,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:51:03 BoogieIcfgContainer [2024-11-09 05:51:03,631 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:51:03,632 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:51:03,632 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:51:03,632 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:51:03,633 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:50:19" (3/4) ... [2024-11-09 05:51:03,636 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:51:03,640 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-09 05:51:03,640 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-09 05:51:03,640 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-09 05:51:03,640 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-09 05:51:03,641 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-09 05:51:03,641 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-09 05:51:03,641 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-09 05:51:03,648 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2024-11-09 05:51:03,649 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-09 05:51:03,649 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 05:51:03,650 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:51:03,650 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:51:03,686 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(waterLevel) < 2) || (\old(waterLevel) == waterLevel)) && ((\old(pumpRunning) != 0) || (pumpRunning == 0))) && ((\old(pumpRunning) < 1) || (pumpRunning == 1))) && ((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (\old(waterLevel) == 2)) || (((\old(waterLevel) == 1) && (1 == systemActive)) && (\old(pumpRunning) == 0))) || ((\old(pumpRunning) == 0) && (0 == systemActive))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2)))) && ((\old(waterLevel) == waterLevel) || (waterLevel == 1))) [2024-11-09 05:51:03,721 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(waterLevel) < 2) || (\old(waterLevel) == waterLevel)) && ((\old(pumpRunning) != 0) || (pumpRunning == 0))) && ((\old(pumpRunning) < 1) || (pumpRunning == 1))) && ((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (\old(waterLevel) == 2)) || (((\old(waterLevel) == 1) && (1 == systemActive)) && (\old(pumpRunning) == 0))) || ((\old(pumpRunning) == 0) && (0 == systemActive))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2)))) && ((\old(waterLevel) == waterLevel) || (waterLevel == 1))) [2024-11-09 05:51:03,784 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:51:03,785 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:51:03,785 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:51:03,785 INFO L158 Benchmark]: Toolchain (without parser) took 45155.17ms. Allocated memory was 190.8MB in the beginning and 1.2GB in the end (delta: 998.2MB). Free memory was 152.7MB in the beginning and 556.4MB in the end (delta: -403.7MB). Peak memory consumption was 596.1MB. Max. memory is 16.1GB. [2024-11-09 05:51:03,786 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:51:03,786 INFO L158 Benchmark]: CACSL2BoogieTranslator took 596.16ms. Allocated memory is still 190.8MB. Free memory was 152.1MB in the beginning and 130.6MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 05:51:03,786 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.29ms. Allocated memory is still 190.8MB. Free memory was 130.6MB in the beginning and 128.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:51:03,786 INFO L158 Benchmark]: Boogie Preprocessor took 42.93ms. Allocated memory is still 190.8MB. Free memory was 128.4MB in the beginning and 127.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:51:03,787 INFO L158 Benchmark]: RCFGBuilder took 619.18ms. Allocated memory is still 190.8MB. Free memory was 127.0MB in the beginning and 152.6MB in the end (delta: -25.6MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2024-11-09 05:51:03,787 INFO L158 Benchmark]: TraceAbstraction took 43655.73ms. Allocated memory was 190.8MB in the beginning and 1.2GB in the end (delta: 998.2MB). Free memory was 152.6MB in the beginning and 563.8MB in the end (delta: -411.2MB). Peak memory consumption was 586.0MB. Max. memory is 16.1GB. [2024-11-09 05:51:03,788 INFO L158 Benchmark]: Witness Printer took 152.80ms. Allocated memory is still 1.2GB. Free memory was 563.8MB in the beginning and 556.4MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 05:51:03,789 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 596.16ms. Allocated memory is still 190.8MB. Free memory was 152.1MB in the beginning and 130.6MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.29ms. Allocated memory is still 190.8MB. Free memory was 130.6MB in the beginning and 128.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.93ms. Allocated memory is still 190.8MB. Free memory was 128.4MB in the beginning and 127.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 619.18ms. Allocated memory is still 190.8MB. Free memory was 127.0MB in the beginning and 152.6MB in the end (delta: -25.6MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * TraceAbstraction took 43655.73ms. Allocated memory was 190.8MB in the beginning and 1.2GB in the end (delta: 998.2MB). Free memory was 152.6MB in the beginning and 563.8MB in the end (delta: -411.2MB). Peak memory consumption was 586.0MB. Max. memory is 16.1GB. * Witness Printer took 152.80ms. Allocated memory is still 1.2GB. Free memory was 563.8MB in the beginning and 556.4MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [49] - GenericResultAtLocation [Line: 153]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [153] - GenericResultAtLocation [Line: 182]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [182] - GenericResultAtLocation [Line: 290]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [290] - GenericResultAtLocation [Line: 325]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [325] - GenericResultAtLocation [Line: 540]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [540] - GenericResultAtLocation [Line: 607]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [607] - GenericResultAtLocation [Line: 616]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [616] - 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: 612]: 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, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.4s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1942 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1914 mSDsluCounter, 2577 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1919 mSDsCounter, 937 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2551 IncrementalHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 937 mSolverCounterUnsat, 658 mSDtfsCounter, 2551 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 825 GetRequests, 532 SyntacticMatches, 23 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8100 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=436occurred in iteration=6, InterpolantAutomatonStates: 160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 313 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 772 NumberOfCodeBlocks, 772 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 899 ConstructedInterpolants, 0 QuantifiedInterpolants, 3841 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1173 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 363/557 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: 550]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 551]: Loop Invariant Derived loop invariant: ((((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) || (((pumpRunning == 0) && (splverifierCounter == 0)) && (0 == systemActive))) || ((((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 332]: Location Invariant Derived location invariant: ((((((\old(waterLevel) < 2) || (\old(waterLevel) == waterLevel)) && ((\old(pumpRunning) != 0) || (pumpRunning == 0))) && ((\old(pumpRunning) < 1) || (pumpRunning == 1))) && ((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (\old(waterLevel) == 2)) || (((\old(waterLevel) == 1) && (1 == systemActive)) && (\old(pumpRunning) == 0))) || ((\old(pumpRunning) == 0) && (0 == systemActive))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2)))) && ((\old(waterLevel) == waterLevel) || (waterLevel == 1))) - ProcedureContractResult [Line: 423]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: ((((waterLevel == 1) && (0 != systemActive)) || ((2 <= waterLevel) && (0 != systemActive))) || (1 == systemActive)) Ensures: (((pumpRunning == 0) && ((((waterLevel == 1) && (0 != systemActive)) || ((2 <= waterLevel) && (0 != systemActive))) || (1 == systemActive))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive))) && (head == \old(head)))) - ProcedureContractResult [Line: 356]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) Ensures: ((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) && ((((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (head == \old(head)))) - ProcedureContractResult [Line: 214]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) || ((pumpRunning == 0) && (0 == systemActive))) Ensures: (((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel == 1)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || (((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive))) || ((pumpRunning == 0) && (0 == systemActive))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (waterLevel == \old(waterLevel))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (head == \old(head)))) - ProcedureContractResult [Line: 332]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: ((((((((((\old(waterLevel) < 2) || (\old(waterLevel) == waterLevel)) || (0 != systemActive)) && ((\old(waterLevel) != 1) || (waterLevel == 1))) && ((pumpRunning == 0) || (\old(waterLevel) != 1))) && (((pumpRunning == 0) && (waterLevel == 1)) || (\old(pumpRunning) < 1))) && ((pumpRunning == 0) || (0 != systemActive))) && ((((\old(pumpRunning) != 0) || (\old(waterLevel) != 2)) || (0 == systemActive)) || ((2 == waterLevel) && (pumpRunning == 1)))) && ((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (\old(waterLevel) == 2)) || (((\old(waterLevel) == 1) && (1 == systemActive)) && (\old(pumpRunning) == 0))) || ((\old(pumpRunning) == 0) && (0 == systemActive))) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (\old(waterLevel) == 2)))) && ((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive))) && (head == \old(head)))) - ProcedureContractResult [Line: 52]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive))) && (head == \old(head)))) - ProcedureContractResult [Line: 364]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Requires: (((pumpRunning == 0) && ((2 == waterLevel) || (waterLevel == 1))) && (1 == systemActive)) Ensures: (((((((2 <= waterLevel) && (1 == systemActive)) && (\old(pumpRunning) == 0)) || (waterLevel == 1)) && ((waterLevel != 1) || (((pumpRunning == 0) && (1 == systemActive)) && (\old(pumpRunning) == 0)))) && ((waterLevel < 2) || ((2 == waterLevel) && (pumpRunning == 1)))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive))) && (head == \old(head)))) - ProcedureContractResult [Line: 202]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: ((2 == waterLevel) || (pumpRunning != 1)) Ensures: (((((1 < waterLevel) || ((\old(waterLevel) != 1) && (\old(waterLevel) <= 1))) && (((((pumpRunning == 0) && (\old(waterLevel) == 1)) && (1 == systemActive)) || (((1 == systemActive) && (\old(waterLevel) == 2)) && (pumpRunning == 1))) || ((pumpRunning == 0) && (0 == systemActive)))) && ((2 == waterLevel) || (1 != systemActive))) && (((((cleanupTimeShifts == \old(cleanupTimeShifts)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (head == \old(head)))) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:51:03,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365d00a6-fe14-4a0a-8738-e3cde850886c/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