./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7bcd24ea8f621c8db79e853f5aaf064ffcae573e6c1e9f03eb1f84bb0c15fc3c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:58:43,584 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:58:43,647 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:58:43,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:58:43,655 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:58:43,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:58:43,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:58:43,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:58:43,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:58:43,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:58:43,679 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:58:43,679 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:58:43,679 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:58:43,679 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:58:43,679 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:58:43,679 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:58:43,679 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:58:43,679 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:58:43,680 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:58:43,680 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:58:43,680 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:58:43,680 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:58:43,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:58:43,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:58:43,681 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:58:43,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:58:43,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:58:43,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:58:43,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:58:43,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:58:43,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:58:43,682 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:58:43,682 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:58:43,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:58:43,682 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:58:43,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:58:43,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:58:43,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:58:43,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:58:43,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:58:43,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:58:43,684 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:58:43,684 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:58:43,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:58:43,684 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:58:43,684 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:58:43,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:58:43,684 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bcd24ea8f621c8db79e853f5aaf064ffcae573e6c1e9f03eb1f84bb0c15fc3c [2024-11-14 03:58:44,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:58:44,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:58:44,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:58:44,052 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:58:44,053 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:58:44,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c Unable to find full path for "g++" [2024-11-14 03:58:46,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:58:46,527 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:58:46,528 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c [2024-11-14 03:58:46,540 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/data/1bf256d9d/eaa738d51c6647609d17e894b2f15c47/FLAG2e5d6c918 [2024-11-14 03:58:46,558 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/data/1bf256d9d/eaa738d51c6647609d17e894b2f15c47 [2024-11-14 03:58:46,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:58:46,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:58:46,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:58:46,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:58:46,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:58:46,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:58:46" (1/1) ... [2024-11-14 03:58:46,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9f7cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:46, skipping insertion in model container [2024-11-14 03:58:46,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:58:46" (1/1) ... [2024-11-14 03:58:46,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:58:46,932 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_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c[8146,8159] [2024-11-14 03:58:47,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:58:47,052 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:58:47,064 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2024-11-14 03:58:47,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [160] [2024-11-14 03:58:47,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [418] [2024-11-14 03:58:47,067 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [488] [2024-11-14 03:58:47,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [526] [2024-11-14 03:58:47,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [535] [2024-11-14 03:58:47,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [584] [2024-11-14 03:58:47,069 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [950] [2024-11-14 03:58:47,127 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_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c[8146,8159] [2024-11-14 03:58:47,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:58:47,250 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:58:47,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47 WrapperNode [2024-11-14 03:58:47,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:58:47,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:58:47,253 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:58:47,253 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:58:47,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (1/1) ... [2024-11-14 03:58:47,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (1/1) ... [2024-11-14 03:58:47,306 INFO L138 Inliner]: procedures = 60, calls = 108, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 240 [2024-11-14 03:58:47,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:58:47,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:58:47,308 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:58:47,308 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:58:47,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (1/1) ... [2024-11-14 03:58:47,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (1/1) ... [2024-11-14 03:58:47,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (1/1) ... [2024-11-14 03:58:47,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (1/1) ... [2024-11-14 03:58:47,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (1/1) ... [2024-11-14 03:58:47,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (1/1) ... [2024-11-14 03:58:47,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (1/1) ... [2024-11-14 03:58:47,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (1/1) ... [2024-11-14 03:58:47,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:58:47,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:58:47,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:58:47,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:58:47,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (1/1) ... [2024-11-14 03:58:47,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:58:47,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:58:47,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:58:47,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:58:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:58:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-14 03:58:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-14 03:58:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 03:58:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 03:58:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 03:58:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 03:58:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 03:58:47,457 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 03:58:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-14 03:58:47,458 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-14 03:58:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2024-11-14 03:58:47,458 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2024-11-14 03:58:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-14 03:58:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-14 03:58:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-14 03:58:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-14 03:58:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:58:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-14 03:58:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-14 03:58:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:58:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:58:47,589 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:58:47,592 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:58:48,092 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-14 03:58:48,092 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:58:48,235 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:58:48,235 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 03:58:48,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:58:48 BoogieIcfgContainer [2024-11-14 03:58:48,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:58:48,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:58:48,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:58:48,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:58:48,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:58:46" (1/3) ... [2024-11-14 03:58:48,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fdc458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:58:48, skipping insertion in model container [2024-11-14 03:58:48,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:58:47" (2/3) ... [2024-11-14 03:58:48,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fdc458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:58:48, skipping insertion in model container [2024-11-14 03:58:48,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:58:48" (3/3) ... [2024-11-14 03:58:48,253 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2024-11-14 03:58:48,275 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:58:48,278 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG minepump_spec5_product56.cil.c that has 10 procedures, 74 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 03:58:48,410 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:58:48,431 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;@2e36175b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:58:48,431 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:58:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 57 states have internal predecessors, (67), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-14 03:58:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 03:58:48,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:48,452 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:48,452 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:48,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1896956197, now seen corresponding path program 1 times [2024-11-14 03:58:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:48,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123515710] [2024-11-14 03:58:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:48,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:58:48,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:48,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123515710] [2024-11-14 03:58:48,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123515710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:48,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:48,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:58:48,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843270687] [2024-11-14 03:58:48,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:48,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 03:58:48,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:48,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 03:58:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:58:48,787 INFO L87 Difference]: Start difference. First operand has 74 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 57 states have internal predecessors, (67), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:58:48,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:48,913 INFO L93 Difference]: Finished difference Result 146 states and 203 transitions. [2024-11-14 03:58:48,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 03:58:48,916 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-14 03:58:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:48,926 INFO L225 Difference]: With dead ends: 146 [2024-11-14 03:58:48,926 INFO L226 Difference]: Without dead ends: 69 [2024-11-14 03:58:48,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:58:48,935 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:48,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:58:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-14 03:58:48,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-14 03:58:48,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 43 states have (on average 1.372093023255814) internal successors, (59), 53 states have internal predecessors, (59), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 03:58:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 92 transitions. [2024-11-14 03:58:48,992 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 92 transitions. Word has length 21 [2024-11-14 03:58:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:48,992 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 92 transitions. [2024-11-14 03:58:48,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:58:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 92 transitions. [2024-11-14 03:58:48,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 03:58:48,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:48,996 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:48,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:58:48,997 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:48,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:48,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1553531262, now seen corresponding path program 1 times [2024-11-14 03:58:48,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:48,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954675538] [2024-11-14 03:58:48,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:48,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:58:49,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:49,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954675538] [2024-11-14 03:58:49,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954675538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:49,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:49,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:58:49,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436990732] [2024-11-14 03:58:49,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:49,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:58:49,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:49,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:58:49,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:58:49,220 INFO L87 Difference]: Start difference. First operand 69 states and 92 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:58:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:49,321 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2024-11-14 03:58:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:58:49,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-14 03:58:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:49,324 INFO L225 Difference]: With dead ends: 110 [2024-11-14 03:58:49,324 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 03:58:49,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:58:49,329 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 14 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:49,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 114 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:58:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 03:58:49,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-14 03:58:49,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 38 states have (on average 1.394736842105263) internal successors, (53), 48 states have internal predecessors, (53), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-14 03:58:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2024-11-14 03:58:49,351 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 22 [2024-11-14 03:58:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:49,352 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2024-11-14 03:58:49,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:58:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2024-11-14 03:58:49,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 03:58:49,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:49,357 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:49,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:58:49,357 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:49,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:49,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1353270980, now seen corresponding path program 1 times [2024-11-14 03:58:49,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:49,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762519611] [2024-11-14 03:58:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:49,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:58:49,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:49,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762519611] [2024-11-14 03:58:49,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762519611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:49,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:49,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:58:49,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287093988] [2024-11-14 03:58:49,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:49,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:58:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:49,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:58:49,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:58:49,575 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:58:49,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:49,791 INFO L93 Difference]: Finished difference Result 179 states and 240 transitions. [2024-11-14 03:58:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:58:49,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-14 03:58:49,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:49,798 INFO L225 Difference]: With dead ends: 179 [2024-11-14 03:58:49,798 INFO L226 Difference]: Without dead ends: 120 [2024-11-14 03:58:49,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:58:49,803 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 73 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:49,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 140 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:58:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-14 03:58:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2024-11-14 03:58:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 91 states have internal predecessors, (101), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 17 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-14 03:58:49,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 157 transitions. [2024-11-14 03:58:49,837 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 157 transitions. Word has length 25 [2024-11-14 03:58:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:49,838 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 157 transitions. [2024-11-14 03:58:49,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:58:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 157 transitions. [2024-11-14 03:58:49,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 03:58:49,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:49,840 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:49,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:58:49,840 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:49,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1034739562, now seen corresponding path program 1 times [2024-11-14 03:58:49,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:49,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114325470] [2024-11-14 03:58:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:49,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 03:58:50,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:50,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114325470] [2024-11-14 03:58:50,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114325470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:50,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:50,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:58:50,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045448177] [2024-11-14 03:58:50,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:50,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:58:50,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:50,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:58:50,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:58:50,112 INFO L87 Difference]: Start difference. First operand 117 states and 157 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:58:50,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:50,524 INFO L93 Difference]: Finished difference Result 314 states and 433 transitions. [2024-11-14 03:58:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:58:50,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-14 03:58:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:50,528 INFO L225 Difference]: With dead ends: 314 [2024-11-14 03:58:50,528 INFO L226 Difference]: Without dead ends: 199 [2024-11-14 03:58:50,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:58:50,531 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 41 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:50,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 300 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:58:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-14 03:58:50,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2024-11-14 03:58:50,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 129 states have (on average 1.310077519379845) internal successors, (169), 146 states have internal predecessors, (169), 38 states have call successors, (38), 30 states have call predecessors, (38), 30 states have return successors, (50), 33 states have call predecessors, (50), 38 states have call successors, (50) [2024-11-14 03:58:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 257 transitions. [2024-11-14 03:58:50,571 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 257 transitions. Word has length 28 [2024-11-14 03:58:50,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:50,572 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 257 transitions. [2024-11-14 03:58:50,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:58:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 257 transitions. [2024-11-14 03:58:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 03:58:50,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:50,575 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:50,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:58:50,575 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:50,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:50,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1274500405, now seen corresponding path program 1 times [2024-11-14 03:58:50,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:50,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935331238] [2024-11-14 03:58:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:50,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:58:51,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:51,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935331238] [2024-11-14 03:58:51,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935331238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:51,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:51,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:58:51,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708145772] [2024-11-14 03:58:51,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:51,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:58:51,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:51,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:58:51,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:58:51,126 INFO L87 Difference]: Start difference. First operand 198 states and 257 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:58:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:51,678 INFO L93 Difference]: Finished difference Result 592 states and 764 transitions. [2024-11-14 03:58:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:58:51,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 38 [2024-11-14 03:58:51,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:51,683 INFO L225 Difference]: With dead ends: 592 [2024-11-14 03:58:51,684 INFO L226 Difference]: Without dead ends: 396 [2024-11-14 03:58:51,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:58:51,687 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 218 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:51,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 346 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:58:51,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-14 03:58:51,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 384. [2024-11-14 03:58:51,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 251 states have (on average 1.2868525896414342) internal successors, (323), 279 states have internal predecessors, (323), 71 states have call successors, (71), 59 states have call predecessors, (71), 61 states have return successors, (95), 64 states have call predecessors, (95), 71 states have call successors, (95) [2024-11-14 03:58:51,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 489 transitions. [2024-11-14 03:58:51,785 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 489 transitions. Word has length 38 [2024-11-14 03:58:51,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:51,786 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 489 transitions. [2024-11-14 03:58:51,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:58:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 489 transitions. [2024-11-14 03:58:51,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 03:58:51,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:51,794 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:51,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:58:51,794 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:51,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash 360081496, now seen corresponding path program 1 times [2024-11-14 03:58:51,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:51,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764668439] [2024-11-14 03:58:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:51,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:58:52,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:52,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764668439] [2024-11-14 03:58:52,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764668439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:52,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:52,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:58:52,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475435328] [2024-11-14 03:58:52,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:52,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:58:52,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:52,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:58:52,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:58:52,272 INFO L87 Difference]: Start difference. First operand 384 states and 489 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:58:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:53,073 INFO L93 Difference]: Finished difference Result 872 states and 1131 transitions. [2024-11-14 03:58:53,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:58:53,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 41 [2024-11-14 03:58:53,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:53,097 INFO L225 Difference]: With dead ends: 872 [2024-11-14 03:58:53,099 INFO L226 Difference]: Without dead ends: 602 [2024-11-14 03:58:53,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:58:53,101 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 262 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:53,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 244 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:58:53,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-11-14 03:58:53,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 566. [2024-11-14 03:58:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 376 states have (on average 1.2792553191489362) internal successors, (481), 416 states have internal predecessors, (481), 100 states have call successors, (100), 76 states have call predecessors, (100), 89 states have return successors, (139), 99 states have call predecessors, (139), 100 states have call successors, (139) [2024-11-14 03:58:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 720 transitions. [2024-11-14 03:58:53,233 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 720 transitions. Word has length 41 [2024-11-14 03:58:53,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:53,233 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 720 transitions. [2024-11-14 03:58:53,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-14 03:58:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 720 transitions. [2024-11-14 03:58:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-14 03:58:53,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:53,242 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:53,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:58:53,242 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:53,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:53,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2115606033, now seen corresponding path program 1 times [2024-11-14 03:58:53,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:53,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425442380] [2024-11-14 03:58:53,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:53,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:58:53,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:53,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425442380] [2024-11-14 03:58:53,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425442380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:53,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:58:53,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:58:53,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730176156] [2024-11-14 03:58:53,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:53,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:58:53,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:53,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:58:53,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:58:53,333 INFO L87 Difference]: Start difference. First operand 566 states and 720 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 03:58:53,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:53,592 INFO L93 Difference]: Finished difference Result 943 states and 1198 transitions. [2024-11-14 03:58:53,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:58:53,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2024-11-14 03:58:53,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:53,599 INFO L225 Difference]: With dead ends: 943 [2024-11-14 03:58:53,600 INFO L226 Difference]: Without dead ends: 379 [2024-11-14 03:58:53,602 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 [2024-11-14 03:58:53,605 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 104 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:53,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 140 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:58:53,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-14 03:58:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 373. [2024-11-14 03:58:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 250 states have (on average 1.26) internal successors, (315), 277 states have internal predecessors, (315), 65 states have call successors, (65), 51 states have call predecessors, (65), 57 states have return successors, (84), 64 states have call predecessors, (84), 65 states have call successors, (84) [2024-11-14 03:58:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 464 transitions. [2024-11-14 03:58:53,706 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 464 transitions. Word has length 63 [2024-11-14 03:58:53,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:53,707 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 464 transitions. [2024-11-14 03:58:53,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 03:58:53,708 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 464 transitions. [2024-11-14 03:58:53,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-14 03:58:53,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:53,710 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:53,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 03:58:53,711 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:53,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 869753847, now seen corresponding path program 1 times [2024-11-14 03:58:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:53,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784093275] [2024-11-14 03:58:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:58:53,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:53,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784093275] [2024-11-14 03:58:53,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784093275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:58:53,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918334314] [2024-11-14 03:58:53,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:53,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:58:53,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:58:53,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:58:53,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:58:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:54,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:58:54,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:58:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:58:54,205 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:58:54,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918334314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:58:54,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:58:54,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-14 03:58:54,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895198103] [2024-11-14 03:58:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:58:54,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:58:54,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:58:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:58:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:58:54,210 INFO L87 Difference]: Start difference. First operand 373 states and 464 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 03:58:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:58:54,379 INFO L93 Difference]: Finished difference Result 666 states and 836 transitions. [2024-11-14 03:58:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:58:54,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 72 [2024-11-14 03:58:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:58:54,383 INFO L225 Difference]: With dead ends: 666 [2024-11-14 03:58:54,383 INFO L226 Difference]: Without dead ends: 363 [2024-11-14 03:58:54,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:58:54,385 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 40 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:58:54,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 139 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:58:54,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-14 03:58:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2024-11-14 03:58:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 243 states have (on average 1.2263374485596708) internal successors, (298), 268 states have internal predecessors, (298), 63 states have call successors, (63), 51 states have call predecessors, (63), 56 states have return successors, (74), 62 states have call predecessors, (74), 63 states have call successors, (74) [2024-11-14 03:58:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 435 transitions. [2024-11-14 03:58:54,460 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 435 transitions. Word has length 72 [2024-11-14 03:58:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:58:54,460 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 435 transitions. [2024-11-14 03:58:54,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-14 03:58:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 435 transitions. [2024-11-14 03:58:54,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 03:58:54,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:58:54,463 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:58:54,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:58:54,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:58:54,668 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:58:54,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:58:54,668 INFO L85 PathProgramCache]: Analyzing trace with hash 393553930, now seen corresponding path program 1 times [2024-11-14 03:58:54,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:58:54,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462623684] [2024-11-14 03:58:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:54,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:58:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 03:58:54,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:58:54,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462623684] [2024-11-14 03:58:54,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462623684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:58:54,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182806882] [2024-11-14 03:58:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:58:54,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:58:54,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:58:54,950 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:58:54,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:58:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:58:55,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:58:55,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:58:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:58:55,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:58:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 03:58:55,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182806882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:58:55,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [36540591] [2024-11-14 03:58:55,679 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2024-11-14 03:58:55,679 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:58:55,684 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:58:55,691 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:58:55,691 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:59:05,419 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 145 for LOIs [2024-11-14 03:59:05,530 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 160 for LOIs [2024-11-14 03:59:10,885 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 20 for LOIs [2024-11-14 03:59:10,942 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 20 for LOIs [2024-11-14 03:59:10,979 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 3 for LOIs [2024-11-14 03:59:10,981 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 16 for LOIs [2024-11-14 03:59:10,982 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:59:21,656 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9765#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (not (= 2 ~waterLevel~0)) (= 1 ~systemActive~0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 03:59:21,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:59:21,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:59:21,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 15 [2024-11-14 03:59:21,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986571006] [2024-11-14 03:59:21,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:59:21,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 03:59:21,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:21,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 03:59:21,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1827, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 03:59:21,659 INFO L87 Difference]: Start difference. First operand 363 states and 435 transitions. Second operand has 15 states, 11 states have (on average 8.272727272727273) internal successors, (91), 13 states have internal predecessors, (91), 7 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (21), 9 states have call predecessors, (21), 7 states have call successors, (21) [2024-11-14 03:59:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:22,793 INFO L93 Difference]: Finished difference Result 469 states and 572 transitions. [2024-11-14 03:59:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-14 03:59:22,794 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 8.272727272727273) internal successors, (91), 13 states have internal predecessors, (91), 7 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (21), 9 states have call predecessors, (21), 7 states have call successors, (21) Word has length 76 [2024-11-14 03:59:22,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:22,800 INFO L225 Difference]: With dead ends: 469 [2024-11-14 03:59:22,800 INFO L226 Difference]: Without dead ends: 467 [2024-11-14 03:59:22,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 195 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1352 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=462, Invalid=3570, Unknown=0, NotChecked=0, Total=4032 [2024-11-14 03:59:22,803 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 387 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:22,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 577 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:59:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-14 03:59:22,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 414. [2024-11-14 03:59:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 276 states have (on average 1.2246376811594204) internal successors, (338), 307 states have internal predecessors, (338), 72 states have call successors, (72), 59 states have call predecessors, (72), 65 states have return successors, (87), 70 states have call predecessors, (87), 72 states have call successors, (87) [2024-11-14 03:59:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 497 transitions. [2024-11-14 03:59:22,866 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 497 transitions. Word has length 76 [2024-11-14 03:59:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:22,867 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 497 transitions. [2024-11-14 03:59:22,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 8.272727272727273) internal successors, (91), 13 states have internal predecessors, (91), 7 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (21), 9 states have call predecessors, (21), 7 states have call successors, (21) [2024-11-14 03:59:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 497 transitions. [2024-11-14 03:59:22,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-14 03:59:22,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:22,871 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:59:22,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 03:59:23,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:23,075 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:59:23,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:23,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1307475861, now seen corresponding path program 1 times [2024-11-14 03:59:23,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:23,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22460216] [2024-11-14 03:59:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:23,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-14 03:59:23,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:23,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22460216] [2024-11-14 03:59:23,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22460216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:59:23,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:59:23,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:59:23,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523062287] [2024-11-14 03:59:23,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:59:23,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:59:23,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:23,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:59:23,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:59:23,195 INFO L87 Difference]: Start difference. First operand 414 states and 497 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-14 03:59:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:23,526 INFO L93 Difference]: Finished difference Result 1054 states and 1273 transitions. [2024-11-14 03:59:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:59:23,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 96 [2024-11-14 03:59:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:23,535 INFO L225 Difference]: With dead ends: 1054 [2024-11-14 03:59:23,535 INFO L226 Difference]: Without dead ends: 824 [2024-11-14 03:59:23,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:59:23,539 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 137 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:23,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 260 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:59:23,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-14 03:59:23,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 822. [2024-11-14 03:59:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 549 states have (on average 1.2222222222222223) internal successors, (671), 608 states have internal predecessors, (671), 142 states have call successors, (142), 118 states have call predecessors, (142), 130 states have return successors, (172), 140 states have call predecessors, (172), 142 states have call successors, (172) [2024-11-14 03:59:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 985 transitions. [2024-11-14 03:59:23,677 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 985 transitions. Word has length 96 [2024-11-14 03:59:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:23,678 INFO L471 AbstractCegarLoop]: Abstraction has 822 states and 985 transitions. [2024-11-14 03:59:23,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-14 03:59:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 985 transitions. [2024-11-14 03:59:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-14 03:59:23,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:23,682 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:59:23,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 03:59:23,682 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:59:23,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:23,683 INFO L85 PathProgramCache]: Analyzing trace with hash 739578478, now seen corresponding path program 1 times [2024-11-14 03:59:23,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:23,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747230221] [2024-11-14 03:59:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:23,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:23,970 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-14 03:59:23,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:23,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747230221] [2024-11-14 03:59:23,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747230221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:59:23,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337911114] [2024-11-14 03:59:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:23,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:23,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:23,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:23,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:59:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:24,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:59:24,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 66 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:59:24,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:59:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-14 03:59:24,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337911114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:59:24,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [200739372] [2024-11-14 03:59:24,768 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2024-11-14 03:59:24,768 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:59:24,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:59:24,769 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:59:24,769 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:59:26,950 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 149 for LOIs [2024-11-14 03:59:27,048 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2024-11-14 03:59:27,241 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 24 for LOIs [2024-11-14 03:59:27,273 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 24 for LOIs [2024-11-14 03:59:27,298 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 38 for LOIs [2024-11-14 03:59:27,310 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 3 for LOIs [2024-11-14 03:59:27,313 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 30 for LOIs [2024-11-14 03:59:27,318 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:59:31,415 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14595#(and (<= ~methaneLevelCritical~0 1) (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 1) (not (= 2 ~waterLevel~0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (= 1 ~systemActive~0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= 0 ~methaneLevelCritical~0) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 03:59:31,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:59:31,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:59:31,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2024-11-14 03:59:31,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988936021] [2024-11-14 03:59:31,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:59:31,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 03:59:31,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 03:59:31,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=2297, Unknown=0, NotChecked=0, Total=2550 [2024-11-14 03:59:31,421 INFO L87 Difference]: Start difference. First operand 822 states and 985 transitions. Second operand has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-14 03:59:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:33,450 INFO L93 Difference]: Finished difference Result 2550 states and 3334 transitions. [2024-11-14 03:59:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-14 03:59:33,451 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) Word has length 99 [2024-11-14 03:59:33,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:33,466 INFO L225 Difference]: With dead ends: 2550 [2024-11-14 03:59:33,466 INFO L226 Difference]: Without dead ends: 1714 [2024-11-14 03:59:33,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 265 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=577, Invalid=5123, Unknown=0, NotChecked=0, Total=5700 [2024-11-14 03:59:33,473 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 575 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:33,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 484 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 03:59:33,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2024-11-14 03:59:33,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1100. [2024-11-14 03:59:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 741 states have (on average 1.1997300944669367) internal successors, (889), 810 states have internal predecessors, (889), 176 states have call successors, (176), 162 states have call predecessors, (176), 182 states have return successors, (220), 186 states have call predecessors, (220), 176 states have call successors, (220) [2024-11-14 03:59:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1285 transitions. [2024-11-14 03:59:33,642 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1285 transitions. Word has length 99 [2024-11-14 03:59:33,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:33,643 INFO L471 AbstractCegarLoop]: Abstraction has 1100 states and 1285 transitions. [2024-11-14 03:59:33,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 9 states have call successors, (24), 5 states have call predecessors, (24), 8 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-14 03:59:33,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1285 transitions. [2024-11-14 03:59:33,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-14 03:59:33,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:59:33,647 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:59:33,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 03:59:33,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 03:59:33,851 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:59:33,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:59:33,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1250008468, now seen corresponding path program 1 times [2024-11-14 03:59:33,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:59:33,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555752777] [2024-11-14 03:59:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:33,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:59:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-14 03:59:34,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:59:34,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555752777] [2024-11-14 03:59:34,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555752777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:59:34,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718567796] [2024-11-14 03:59:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:59:34,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:59:34,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:59:34,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:59:34,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:59:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:59:35,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 03:59:35,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:59:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 62 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:59:35,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:59:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 54 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-14 03:59:35,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718567796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:59:35,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1308664640] [2024-11-14 03:59:35,973 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2024-11-14 03:59:35,973 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:59:35,974 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:59:35,974 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:59:35,974 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:59:37,470 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 151 for LOIs [2024-11-14 03:59:37,560 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2024-11-14 03:59:37,728 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 24 for LOIs [2024-11-14 03:59:37,755 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 24 for LOIs [2024-11-14 03:59:37,773 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 38 for LOIs [2024-11-14 03:59:37,780 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 19 for LOIs [2024-11-14 03:59:37,784 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 30 for LOIs [2024-11-14 03:59:37,788 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:59:43,138 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20774#(and (<= ~methaneLevelCritical~0 1) (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 1) (not (= 2 ~waterLevel~0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (= 1 ~systemActive~0) (<= 0 (+ ~waterLevel~0 2147483648)) (<= 0 ~methaneLevelCritical~0) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 03:59:43,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:59:43,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:59:43,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 34 [2024-11-14 03:59:43,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640625230] [2024-11-14 03:59:43,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:59:43,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 03:59:43,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:59:43,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 03:59:43,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3991, Unknown=0, NotChecked=0, Total=4422 [2024-11-14 03:59:43,142 INFO L87 Difference]: Start difference. First operand 1100 states and 1285 transitions. Second operand has 34 states, 31 states have (on average 5.096774193548387) internal successors, (158), 33 states have internal predecessors, (158), 19 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 18 states have call predecessors, (33), 18 states have call successors, (33) [2024-11-14 03:59:47,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:59:47,347 INFO L93 Difference]: Finished difference Result 2864 states and 3469 transitions. [2024-11-14 03:59:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-14 03:59:47,347 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 5.096774193548387) internal successors, (158), 33 states have internal predecessors, (158), 19 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 18 states have call predecessors, (33), 18 states have call successors, (33) Word has length 104 [2024-11-14 03:59:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:59:47,350 INFO L225 Difference]: With dead ends: 2864 [2024-11-14 03:59:47,350 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 03:59:47,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 282 SyntacticMatches, 11 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5271 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1590, Invalid=12452, Unknown=0, NotChecked=0, Total=14042 [2024-11-14 03:59:47,361 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 1399 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 1000 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 3707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1000 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:59:47,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 1448 Invalid, 3707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1000 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 03:59:47,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 03:59:47,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 03:59:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:59:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 03:59:47,366 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2024-11-14 03:59:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:59:47,366 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 03:59:47,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 5.096774193548387) internal successors, (158), 33 states have internal predecessors, (158), 19 states have call successors, (33), 8 states have call predecessors, (33), 13 states have return successors, (33), 18 states have call predecessors, (33), 18 states have call successors, (33) [2024-11-14 03:59:47,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 03:59:47,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 03:59:47,370 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 03:59:47,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:59:47,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-14 03:59:47,577 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:59:47,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 04:00:06,920 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:00:06,952 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |old(~pumpRunning~0)| 1)) (.cse2 (<= 1 ~switchedOnBeforeTS~0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and .cse0 .cse1 (<= ~waterLevel~0 0) .cse2) (and .cse0 .cse1 (= ~waterLevel~0 1) .cse2))) (= ~pumpRunning~0 1)) Eliminated clause: (and (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse0 (= ~waterLevel~0 1) .cse1) (and (= 2 ~waterLevel~0) .cse0) (and .cse0 (<= ~waterLevel~0 0) .cse1))) (= ~pumpRunning~0 1)) [2024-11-14 04:00:06,983 WARN L162 FloydHoareUtils]: Requires clause for changeMethaneLevel contained old-variable. Original clause: (let ((.cse0 (= |old(~methaneLevelCritical~0)| 0)) (.cse1 (= ~methaneLevelCritical~0 0))) (and (or .cse0 (not .cse1)) (let ((.cse3 (= 1 ~systemActive~0)) (.cse6 (<= 1 ~switchedOnBeforeTS~0)) (.cse5 (= ~pumpRunning~0 1)) (.cse2 (= ~pumpRunning~0 0)) (.cse4 (<= ~waterLevel~0 2))) (or (and .cse2 .cse3 .cse4) (and (= 2 ~waterLevel~0) .cse3 .cse5) (and .cse3 (= ~waterLevel~0 1) .cse6 .cse5) (and .cse3 (<= ~waterLevel~0 0) .cse6 .cse5) (and .cse2 .cse4 (= 0 ~systemActive~0)))) (or (not .cse0) .cse1))) Eliminated clause: (and (let ((.cse1 (= 1 ~systemActive~0)) (.cse4 (<= 1 ~switchedOnBeforeTS~0)) (.cse3 (= ~pumpRunning~0 1)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 .cse2) (and (= 2 ~waterLevel~0) .cse1 .cse3) (and .cse1 (= ~waterLevel~0 1) .cse4 .cse3) (and .cse1 (<= ~waterLevel~0 0) .cse4 .cse3) (and .cse0 .cse2 (= 0 ~systemActive~0)))) (exists ((|old(~methaneLevelCritical~0)| Int)) (let ((.cse5 (= |old(~methaneLevelCritical~0)| 0)) (.cse6 (= ~methaneLevelCritical~0 0))) (and (or .cse5 (not .cse6)) (or (not .cse5) .cse6))))) [2024-11-14 04:00:06,994 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 04:00:07,002 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse2 (= 0 ~systemActive~0)) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not .cse0) (and (= ~pumpRunning~0 0) .cse1)) (or (< |old(~switchedOnBeforeTS~0)| 1) .cse2 (<= 1 ~switchedOnBeforeTS~0)) (let ((.cse4 (= |old(~pumpRunning~0)| 1)) (.cse3 (= 1 ~systemActive~0)) (.cse5 (<= |old(~waterLevel~0)| 2))) (or (and .cse3 .cse4 (= |old(~waterLevel~0)| 2)) (and .cse0 .cse2 .cse5) (and .cse3 .cse4 (<= 1 |old(~switchedOnBeforeTS~0)|) .cse5) (and .cse3 .cse0 .cse5))) (or (< |old(~pumpRunning~0)| 1) (and .cse1 (= ~pumpRunning~0 1))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~switchedOnBeforeTS~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (= |old(~pumpRunning~0)| 0)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (< |old(~switchedOnBeforeTS~0)| 1) (< 0 ~switchedOnBeforeTS~0) .cse0) (or (not .cse1) (and (= ~pumpRunning~0 0) .cse2)) (let ((.cse4 (= |old(~pumpRunning~0)| 1)) (.cse3 (= 1 ~systemActive~0)) (.cse5 (<= |old(~waterLevel~0)| 2))) (or (and .cse3 .cse4 (= |old(~waterLevel~0)| 2)) (and .cse1 .cse0 .cse5) (and .cse3 .cse4 (<= 1 |old(~switchedOnBeforeTS~0)|) .cse5) (and .cse3 .cse1 .cse5))) (or (< |old(~pumpRunning~0)| 1) (and .cse2 (= ~pumpRunning~0 1)))))) [2024-11-14 04:00:07,015 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 04:00:07,021 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3)))))) [2024-11-14 04:00:07,025 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 04:00:07,029 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (let ((.cse3 (= ~pumpRunning~0 0)) (.cse1 (<= |old(~waterLevel~0)| 2)) (.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 1))) (or (and .cse0 (<= 1 ~switchedOnBeforeTS~0) .cse1 .cse2) (and .cse3 .cse0 .cse1) (and .cse3 (= 0 ~systemActive~0) .cse1) (and .cse0 (= |old(~waterLevel~0)| 2) .cse2))) (= |old(~waterLevel~0)| ~waterLevel~0)) Eliminated clause: (let ((.cse1 (= 1 ~systemActive~0)) (.cse3 (= ~pumpRunning~0 1)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 .cse2) (and (= 2 ~waterLevel~0) .cse1 .cse3) (and .cse1 .cse2 (<= 1 ~switchedOnBeforeTS~0) .cse3) (and .cse0 .cse2 (= 0 ~systemActive~0)))) [2024-11-14 04:00:07,039 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__lowWaterSensor contained old-variable. Original clause: (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (< |old(~pumpRunning~0)| 1) (= ~pumpRunning~0 1)) (let ((.cse1 (= 1 ~systemActive~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse3 (<= 1 ~switchedOnBeforeTS~0))) (or (and .cse1 .cse2 (<= ~waterLevel~0 0) .cse3) (and .cse1 .cse0 (<= ~waterLevel~0 2)) (and .cse1 .cse2 (= ~waterLevel~0 1) .cse3)))))) [2024-11-14 04:00:07,042 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 04:00:07,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:00:07 BoogieIcfgContainer [2024-11-14 04:00:07,050 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:00:07,051 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:00:07,051 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:00:07,051 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:00:07,054 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:58:48" (3/4) ... [2024-11-14 04:00:07,057 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 04:00:07,060 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-14 04:00:07,060 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-14 04:00:07,060 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-14 04:00:07,060 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-14 04:00:07,060 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-14 04:00:07,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-14 04:00:07,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-14 04:00:07,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__lowWaterSensor [2024-11-14 04:00:07,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-11-14 04:00:07,073 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2024-11-14 04:00:07,076 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-14 04:00:07,076 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-14 04:00:07,077 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:00:07,077 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 04:00:07,208 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 04:00:07,209 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 04:00:07,209 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:00:07,210 INFO L158 Benchmark]: Toolchain (without parser) took 80647.57ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 91.6MB in the beginning and 809.5MB in the end (delta: -717.8MB). Peak memory consumption was 418.8MB. Max. memory is 16.1GB. [2024-11-14 04:00:07,210 INFO L158 Benchmark]: CDTParser took 1.82ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:00:07,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 688.25ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 72.4MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:00:07,211 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.83ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 70.2MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:00:07,211 INFO L158 Benchmark]: Boogie Preprocessor took 38.44ms. Allocated memory is still 117.4MB. Free memory was 70.2MB in the beginning and 68.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:00:07,212 INFO L158 Benchmark]: RCFGBuilder took 889.63ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 40.4MB in the end (delta: 28.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:00:07,212 INFO L158 Benchmark]: TraceAbstraction took 78811.18ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 39.9MB in the beginning and 817.9MB in the end (delta: -777.9MB). Peak memory consumption was 721.7MB. Max. memory is 16.1GB. [2024-11-14 04:00:07,214 INFO L158 Benchmark]: Witness Printer took 158.36ms. Allocated memory is still 1.3GB. Free memory was 817.9MB in the beginning and 809.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:00:07,216 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.82ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 688.25ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 72.4MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.83ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 70.2MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.44ms. Allocated memory is still 117.4MB. Free memory was 70.2MB in the beginning and 68.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 889.63ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 40.4MB in the end (delta: 28.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 78811.18ms. Allocated memory was 117.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 39.9MB in the beginning and 817.9MB in the end (delta: -777.9MB). Peak memory consumption was 721.7MB. Max. memory is 16.1GB. * Witness Printer took 158.36ms. Allocated memory is still 1.3GB. Free memory was 817.9MB in the beginning and 809.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] - GenericResultAtLocation [Line: 160]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [160] - GenericResultAtLocation [Line: 418]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [418] - GenericResultAtLocation [Line: 488]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [488] - GenericResultAtLocation [Line: 526]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [526] - GenericResultAtLocation [Line: 535]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [535] - GenericResultAtLocation [Line: 584]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [584] - GenericResultAtLocation [Line: 950]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [950] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 531]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.2s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3276 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3250 mSDsluCounter, 4271 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3142 mSDsCounter, 1710 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5166 IncrementalHoareTripleChecker+Invalid, 6876 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1710 mSolverCounterUnsat, 1129 mSDtfsCounter, 5166 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1150 GetRequests, 836 SyntacticMatches, 20 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8642 ImplicationChecksByTransitivity, 24.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1100occurred in iteration=11, InterpolantAutomatonStates: 162, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 727 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 1036 NumberOfCodeBlocks, 1036 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1296 ConstructedInterpolants, 0 QuantifiedInterpolants, 3475 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1264 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 624/733 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: 430]: Loop Invariant Derived loop invariant: (((((((((((((((((pumpRunning == 0) && (2 == waterLevel)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (0 == systemActive)) || ((((((1 == systemActive) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || (((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0))) || (((((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) || (((((2 == waterLevel) && (1 == systemActive)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (pumpRunning == 1))) || ((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) || ((((((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || (((((pumpRunning == 0) && (2 == waterLevel)) && (methaneLevelCritical == 0)) && (splverifierCounter == 0)) && (0 == systemActive))) || ((((((1 == systemActive) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((((methaneLevelCritical == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || (((((pumpRunning == 0) && (waterLevel <= 1)) && (methaneLevelCritical != 0)) && (splverifierCounter == 0)) && (0 == systemActive))) || (((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (waterLevel <= 1)) && (splverifierCounter == 0)) && (0 == systemActive))) || (((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (waterLevel <= 1)) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 962]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 429]: Location Invariant Derived location invariant: 0 - ProcedureContractResult [Line: 293]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: ((((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) || ((2 == waterLevel) && (1 == systemActive))) || (((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS))) && (pumpRunning == 1)) Ensures: (((pumpRunning == 0) && (((((2 == waterLevel) && (1 == systemActive)) && (\old(pumpRunning) == 1)) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)))) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 200]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) Ensures: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) && (((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 84]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: (((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || (((pumpRunning == 0) && (waterLevel <= 2)) && (0 == systemActive))) Ensures: ((((((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || (((pumpRunning == 0) && (waterLevel <= 2)) && (0 == systemActive))) && ((methaneLevelCritical == 0) || (\old(methaneLevelCritical) == 0))) && ((\old(methaneLevelCritical) != 0) || (methaneLevelCritical != 0))) && ((((((waterLevel == \old(waterLevel)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 952]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((methaneLevelCritical == \old(methaneLevelCritical)) && (systemActive == \old(systemActive))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 173]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: ((((((((((pumpRunning == 0) && (((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel)))) && (1 == systemActive)) && (1 <= switchedOnBeforeTS)) || ((((((\old(waterLevel) == ((long long) waterLevel + 1)) && (1 <= \old(waterLevel))) || ((\old(waterLevel) <= 0) && (\old(waterLevel) == waterLevel))) && (1 == systemActive)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || (\old(pumpRunning) < 1)) && ((((\old(pumpRunning) == 1) && (\old(waterLevel) == 2)) || ((\old(pumpRunning) == 0) && (\old(waterLevel) <= 2))) || (((\old(pumpRunning) == 1) && (1 <= \old(switchedOnBeforeTS))) && (\old(waterLevel) <= 2)))) && (((pumpRunning == 0) && (\old(waterLevel) == waterLevel)) || (0 != systemActive))) && ((((((pumpRunning == 0) && (1 == systemActive)) && (\old(waterLevel) == waterLevel)) || (\old(pumpRunning) != 0)) || ((((2 == waterLevel) && (1 == systemActive)) && (\old(waterLevel) == 2)) && (pumpRunning == 1))) || (0 == systemActive))) && ((((methaneLevelCritical == \old(methaneLevelCritical)) && (systemActive == \old(systemActive))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 208]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Ensures: ((((((\old(pumpRunning) < 1) || (pumpRunning == 1)) && ((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (waterLevel <= 2))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS)))) && (((\old(pumpRunning) != 0) || (pumpRunning == 0)) || (1 < waterLevel))) && ((pumpRunning == 0) || (pumpRunning == 1))) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 72]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: ((((((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2)) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || (((pumpRunning == 0) && (waterLevel <= 2)) && (0 == systemActive))) Ensures: (((((((2 == waterLevel) || (\old(waterLevel) != 2)) && ((2 == waterLevel) || (\old(waterLevel) != 1))) && (((0 < \old(waterLevel)) || (pumpRunning != 1)) || (waterLevel < 2))) && (((((((1 == systemActive) && (1 <= switchedOnBeforeTS)) && (\old(waterLevel) <= 2)) && (pumpRunning == 1)) || (((pumpRunning == 0) && (1 == systemActive)) && (\old(waterLevel) <= 2))) || (((pumpRunning == 0) && (0 == systemActive)) && (\old(waterLevel) <= 2))) || (((1 == systemActive) && (\old(waterLevel) == 2)) && (pumpRunning == 1)))) && (waterLevel <= 2)) && ((((((methaneLevelCritical == \old(methaneLevelCritical)) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 234]: Procedure Contract for processEnvironment__wrappee__lowWaterSensor Derived contract for procedure processEnvironment__wrappee__lowWaterSensor. Ensures: (((((((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel <= 0)) && (1 <= switchedOnBeforeTS)) || (((1 == systemActive) && (\old(pumpRunning) == 0)) && (waterLevel <= 2))) || ((((1 == systemActive) && (\old(pumpRunning) == 1)) && (waterLevel == 1)) && (1 <= switchedOnBeforeTS))) && (((\old(pumpRunning) != 0) || (pumpRunning == 0)) || (1 < waterLevel))) && ((pumpRunning == 0) || (pumpRunning == 1))) && ((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 312]: Procedure Contract for isPumpRunning Derived contract for procedure isPumpRunning. Requires: (((((((pumpRunning == 0) && (waterLevel <= 1)) && (0 == systemActive)) || (((pumpRunning == 0) && (1 == systemActive)) && (waterLevel <= 2))) || (((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1))) || ((((1 == systemActive) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || (((pumpRunning == 0) && (2 == waterLevel)) && (0 == systemActive))) Ensures: (((((((pumpRunning != 0) || ((\result == 0) && (1 == systemActive))) || (0 == systemActive)) && (((((2 == waterLevel) && (1 == systemActive)) && (pumpRunning == 1)) || ((((1 == systemActive) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS)) && (pumpRunning == 1))) || ((pumpRunning == 0) && (waterLevel <= 2)))) && ((\result == 1) || (pumpRunning != 1))) && ((\result == 0) || (0 != systemActive))) && (((((((waterLevel == \old(waterLevel)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) RESULT: Ultimate proved your program to be correct! [2024-11-14 04:00:07,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e90ed53-f8f9-4dda-87e8-ef2b2dd2ffc5/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE