./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product36.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_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/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_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/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_d2faef27-ed25-48c2-b955-c9f78d20a3f6/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 06101f936f6436bac89af152aefce31c84cfc20ba80a5adfcf1af02faa2d4f3b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:03:02,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:03:03,119 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:03:03,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:03:03,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:03:03,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:03:03,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:03:03,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:03:03,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:03:03,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:03:03,161 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:03:03,161 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:03:03,161 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:03:03,161 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:03:03,161 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:03:03,162 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:03:03,162 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:03:03,162 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:03:03,162 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:03:03,162 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:03:03,162 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:03:03,163 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:03:03,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:03:03,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:03:03,163 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:03:03,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:03:03,163 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:03:03,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:03:03,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:03:03,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:03:03,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:03:03,164 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:03:03,164 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:03:03,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:03:03,165 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:03:03,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:03:03,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:03:03,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:03:03,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:03:03,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:03:03,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:03:03,166 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:03:03,166 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:03:03,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:03:03,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:03:03,167 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:03:03,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:03:03,168 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_d2faef27-ed25-48c2-b955-c9f78d20a3f6/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 -> 06101f936f6436bac89af152aefce31c84cfc20ba80a5adfcf1af02faa2d4f3b [2024-11-14 05:03:03,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:03:03,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:03:03,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:03:03,555 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:03:03,556 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:03:03,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c Unable to find full path for "g++" [2024-11-14 05:03:05,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:03:06,184 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:03:06,189 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c [2024-11-14 05:03:06,215 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/data/6ea9fd113/75a62921d0d140b9bb9028fc55dbc317/FLAGb12bdd32c [2024-11-14 05:03:06,247 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/data/6ea9fd113/75a62921d0d140b9bb9028fc55dbc317 [2024-11-14 05:03:06,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:03:06,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:03:06,256 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:03:06,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:03:06,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:03:06,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:06,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67dc0b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06, skipping insertion in model container [2024-11-14 05:03:06,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:06,321 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:03:06,571 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_d2faef27-ed25-48c2-b955-c9f78d20a3f6/sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c[2141,2154] [2024-11-14 05:03:06,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:03:06,776 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:03:06,789 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] [2024-11-14 05:03:06,792 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [87] [2024-11-14 05:03:06,792 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [96] [2024-11-14 05:03:06,793 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [287] [2024-11-14 05:03:06,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [653] [2024-11-14 05:03:06,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [725] [2024-11-14 05:03:06,794 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [823] [2024-11-14 05:03:06,795 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [873] [2024-11-14 05:03:06,809 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_d2faef27-ed25-48c2-b955-c9f78d20a3f6/sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c[2141,2154] [2024-11-14 05:03:06,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:03:06,958 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:03:06,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06 WrapperNode [2024-11-14 05:03:06,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:03:06,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:03:06,963 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:03:06,963 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:03:06,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:06,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:07,031 INFO L138 Inliner]: procedures = 56, calls = 99, calls flagged for inlining = 25, calls inlined = 21, statements flattened = 184 [2024-11-14 05:03:07,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:03:07,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:03:07,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:03:07,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:03:07,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:07,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:07,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:07,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:07,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:07,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:07,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:07,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:07,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:03:07,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:03:07,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:03:07,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:03:07,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (1/1) ... [2024-11-14 05:03:07,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:03:07,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:07,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:03:07,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:03:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:03:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-14 05:03:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-14 05:03:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-14 05:03:07,168 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-14 05:03:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-14 05:03:07,168 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-14 05:03:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-14 05:03:07,168 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-14 05:03:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2024-11-14 05:03:07,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2024-11-14 05:03:07,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:03:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-14 05:03:07,170 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-14 05:03:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:03:07,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:03:07,293 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:03:07,297 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:03:07,717 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-14 05:03:07,717 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:03:07,892 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:03:07,893 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 05:03:07,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:03:07 BoogieIcfgContainer [2024-11-14 05:03:07,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:03:07,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:03:07,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:03:07,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:03:07,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:03:06" (1/3) ... [2024-11-14 05:03:07,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46505f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:03:07, skipping insertion in model container [2024-11-14 05:03:07,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:03:06" (2/3) ... [2024-11-14 05:03:07,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46505f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:03:07, skipping insertion in model container [2024-11-14 05:03:07,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:03:07" (3/3) ... [2024-11-14 05:03:07,912 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product36.cil.c [2024-11-14 05:03:07,935 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:03:07,937 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG minepump_spec5_product36.cil.c that has 7 procedures, 51 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-14 05:03:08,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:03:08,044 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;@759e11be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:03:08,044 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:03:08,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 05:03:08,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-14 05:03:08,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:08,060 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:08,061 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:08,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:08,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1180135697, now seen corresponding path program 1 times [2024-11-14 05:03:08,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:08,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704954407] [2024-11-14 05:03:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:08,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:03:08,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:08,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704954407] [2024-11-14 05:03:08,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704954407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:08,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:03:08,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 05:03:08,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494017705] [2024-11-14 05:03:08,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:08,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 05:03:08,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:08,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 05:03:08,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:03:08,373 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:03:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:08,471 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2024-11-14 05:03:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 05:03:08,475 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-14 05:03:08,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:08,486 INFO L225 Difference]: With dead ends: 100 [2024-11-14 05:03:08,487 INFO L226 Difference]: Without dead ends: 46 [2024-11-14 05:03:08,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 05:03:08,497 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:08,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:03:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-14 05:03:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-14 05:03:08,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3) internal successors, (39), 35 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 05:03:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2024-11-14 05:03:08,542 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 21 [2024-11-14 05:03:08,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:08,543 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2024-11-14 05:03:08,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:03:08,544 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2024-11-14 05:03:08,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 05:03:08,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:08,546 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:08,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:03:08,547 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:08,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:08,548 INFO L85 PathProgramCache]: Analyzing trace with hash 315817046, now seen corresponding path program 1 times [2024-11-14 05:03:08,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:08,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379463542] [2024-11-14 05:03:08,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:08,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:03:08,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:08,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379463542] [2024-11-14 05:03:08,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379463542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:08,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:03:08,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:03:08,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986484505] [2024-11-14 05:03:08,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:08,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:03:08,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:08,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:03:08,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:03:08,733 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:03:08,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:08,807 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2024-11-14 05:03:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:03:08,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-14 05:03:08,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:08,811 INFO L225 Difference]: With dead ends: 69 [2024-11-14 05:03:08,811 INFO L226 Difference]: Without dead ends: 38 [2024-11-14 05:03:08,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:03:08,814 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:08,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:03:08,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-14 05:03:08,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-14 05:03:08,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 05:03:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2024-11-14 05:03:08,826 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 22 [2024-11-14 05:03:08,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:08,826 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2024-11-14 05:03:08,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:03:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2024-11-14 05:03:08,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-14 05:03:08,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:08,828 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:08,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:03:08,828 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:08,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:08,829 INFO L85 PathProgramCache]: Analyzing trace with hash 515358470, now seen corresponding path program 1 times [2024-11-14 05:03:08,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:08,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613741736] [2024-11-14 05:03:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:08,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:03:09,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:09,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613741736] [2024-11-14 05:03:09,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613741736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:09,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:03:09,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:03:09,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540849461] [2024-11-14 05:03:09,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:09,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:03:09,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:09,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:03:09,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:03:09,234 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:03:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:09,948 INFO L93 Difference]: Finished difference Result 141 states and 175 transitions. [2024-11-14 05:03:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 05:03:09,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-14 05:03:09,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:09,951 INFO L225 Difference]: With dead ends: 141 [2024-11-14 05:03:09,951 INFO L226 Difference]: Without dead ends: 105 [2024-11-14 05:03:09,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-14 05:03:09,955 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 71 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:09,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 276 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 05:03:09,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-14 05:03:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 76. [2024-11-14 05:03:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.26) internal successors, (63), 56 states have internal predecessors, (63), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (15), 12 states have call predecessors, (15), 13 states have call successors, (15) [2024-11-14 05:03:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2024-11-14 05:03:09,999 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 24 [2024-11-14 05:03:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:10,000 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2024-11-14 05:03:10,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:03:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2024-11-14 05:03:10,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 05:03:10,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:10,004 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:10,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:03:10,004 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:10,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash -414642501, now seen corresponding path program 1 times [2024-11-14 05:03:10,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:10,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718066712] [2024-11-14 05:03:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:10,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:03:10,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:10,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718066712] [2024-11-14 05:03:10,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718066712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:10,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:03:10,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:03:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024951099] [2024-11-14 05:03:10,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:10,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:03:10,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:03:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:03:10,406 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:03:10,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:10,608 INFO L93 Difference]: Finished difference Result 242 states and 297 transitions. [2024-11-14 05:03:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:03:10,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-14 05:03:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:10,614 INFO L225 Difference]: With dead ends: 242 [2024-11-14 05:03:10,614 INFO L226 Difference]: Without dead ends: 168 [2024-11-14 05:03:10,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:03:10,619 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 59 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:10,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 141 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:03:10,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-14 05:03:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 102. [2024-11-14 05:03:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 73 states have internal predecessors, (87), 16 states have call successors, (16), 16 states have call predecessors, (16), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-14 05:03:10,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2024-11-14 05:03:10,665 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 27 [2024-11-14 05:03:10,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:10,666 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2024-11-14 05:03:10,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 05:03:10,666 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2024-11-14 05:03:10,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 05:03:10,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:10,668 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] [2024-11-14 05:03:10,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:03:10,668 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:10,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1801841845, now seen corresponding path program 1 times [2024-11-14 05:03:10,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:10,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302872969] [2024-11-14 05:03:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:10,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:03:11,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:11,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302872969] [2024-11-14 05:03:11,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302872969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:03:11,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:03:11,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 05:03:11,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62398852] [2024-11-14 05:03:11,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:03:11,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:03:11,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:11,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:03:11,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:03:11,203 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:03:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:11,834 INFO L93 Difference]: Finished difference Result 253 states and 301 transitions. [2024-11-14 05:03:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:03:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2024-11-14 05:03:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:11,838 INFO L225 Difference]: With dead ends: 253 [2024-11-14 05:03:11,842 INFO L226 Difference]: Without dead ends: 196 [2024-11-14 05:03:11,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:03:11,844 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 92 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:11,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 285 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:03:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-14 05:03:11,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 151. [2024-11-14 05:03:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 110 states have internal predecessors, (130), 24 states have call successors, (24), 22 states have call predecessors, (24), 23 states have return successors, (25), 24 states have call predecessors, (25), 24 states have call successors, (25) [2024-11-14 05:03:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 179 transitions. [2024-11-14 05:03:11,947 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 179 transitions. Word has length 30 [2024-11-14 05:03:11,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:11,948 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 179 transitions. [2024-11-14 05:03:11,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 05:03:11,948 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 179 transitions. [2024-11-14 05:03:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 05:03:11,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:11,950 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:11,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 05:03:11,951 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:11,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1204256807, now seen corresponding path program 1 times [2024-11-14 05:03:11,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:11,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517911863] [2024-11-14 05:03:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:11,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:03:12,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:12,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517911863] [2024-11-14 05:03:12,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517911863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:12,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132664757] [2024-11-14 05:03:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:12,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:12,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:12,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:12,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:03:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:13,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 05:03:13,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:03:13,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:03:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:03:14,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132664757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:03:14,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [83536169] [2024-11-14 05:03:14,250 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2024-11-14 05:03:14,251 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:03:14,255 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:03:14,261 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:03:14,261 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:03:22,775 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 146 for LOIs [2024-11-14 05:03:22,873 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 53 for LOIs [2024-11-14 05:03:23,157 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 60 for LOIs [2024-11-14 05:03:23,177 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:03:27,894 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2245#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (not (= 2 ~waterLevel~0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 05:03:27,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:03:27,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:03:27,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 21 [2024-11-14 05:03:27,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035138244] [2024-11-14 05:03:27,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:03:27,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 05:03:27,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 05:03:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1600, Unknown=0, NotChecked=0, Total=1806 [2024-11-14 05:03:27,898 INFO L87 Difference]: Start difference. First operand 151 states and 179 transitions. Second operand has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 8 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-14 05:03:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:30,977 INFO L93 Difference]: Finished difference Result 711 states and 875 transitions. [2024-11-14 05:03:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-14 05:03:30,979 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 8 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) Word has length 47 [2024-11-14 05:03:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:30,989 INFO L225 Difference]: With dead ends: 711 [2024-11-14 05:03:30,993 INFO L226 Difference]: Without dead ends: 565 [2024-11-14 05:03:31,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2811 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1039, Invalid=7891, Unknown=0, NotChecked=0, Total=8930 [2024-11-14 05:03:31,002 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 531 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:31,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 639 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 05:03:31,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-14 05:03:31,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 472. [2024-11-14 05:03:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 321 states have (on average 1.205607476635514) internal successors, (387), 352 states have internal predecessors, (387), 71 states have call successors, (71), 67 states have call predecessors, (71), 79 states have return successors, (96), 71 states have call predecessors, (96), 71 states have call successors, (96) [2024-11-14 05:03:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 554 transitions. [2024-11-14 05:03:31,121 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 554 transitions. Word has length 47 [2024-11-14 05:03:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:31,122 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 554 transitions. [2024-11-14 05:03:31,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 8 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 7 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-14 05:03:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 554 transitions. [2024-11-14 05:03:31,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 05:03:31,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:03:31,126 INFO L215 NwaCegarLoop]: trace histogram [4, 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 05:03:31,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:03:31,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:31,331 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:03:31,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:03:31,331 INFO L85 PathProgramCache]: Analyzing trace with hash 438110203, now seen corresponding path program 1 times [2024-11-14 05:03:31,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:03:31,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192483258] [2024-11-14 05:03:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:31,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:03:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 05:03:31,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:03:31,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192483258] [2024-11-14 05:03:31,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192483258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:03:31,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275962351] [2024-11-14 05:03:31,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:03:31,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:03:31,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:03:31,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:03:31,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:03:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:03:32,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 05:03:32,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:03:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:03:32,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:03:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-14 05:03:32,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275962351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:03:32,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1012186973] [2024-11-14 05:03:32,964 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2024-11-14 05:03:32,964 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:03:32,967 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:03:32,968 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:03:32,968 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:03:38,058 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 150 for LOIs [2024-11-14 05:03:38,119 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 53 for LOIs [2024-11-14 05:03:38,323 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 60 for LOIs [2024-11-14 05:03:38,346 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:03:43,650 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4493#(and (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (not (= 2 ~waterLevel~0)) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 (+ ~pumpRunning~0 2147483648)) (= ~switchedOnBeforeTS~0 0))' at error location [2024-11-14 05:03:43,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:03:43,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:03:43,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 8] total 22 [2024-11-14 05:03:43,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964989578] [2024-11-14 05:03:43,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:03:43,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 05:03:43,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:03:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 05:03:43,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1584, Unknown=0, NotChecked=0, Total=1806 [2024-11-14 05:03:43,653 INFO L87 Difference]: Start difference. First operand 472 states and 554 transitions. Second operand has 22 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 9 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-14 05:03:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:03:46,665 INFO L93 Difference]: Finished difference Result 1626 states and 2015 transitions. [2024-11-14 05:03:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-14 05:03:46,666 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 9 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) Word has length 52 [2024-11-14 05:03:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:03:46,667 INFO L225 Difference]: With dead ends: 1626 [2024-11-14 05:03:46,668 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 05:03:46,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 125 SyntacticMatches, 14 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3033 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1392, Invalid=7728, Unknown=0, NotChecked=0, Total=9120 [2024-11-14 05:03:46,675 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 462 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:03:46,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 756 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 05:03:46,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 05:03:46,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 05:03:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:03:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 05:03:46,681 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2024-11-14 05:03:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:03:46,682 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 05:03:46,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 9 states have call successors, (17), 7 states have call predecessors, (17), 9 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-14 05:03:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 05:03:46,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 05:03:46,689 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 05:03:46,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:03:46,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 05:03:46,895 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:03:46,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 05:03:56,118 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 05:03:56,148 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse0 (= |old(~waterLevel~0)| 2)) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (= |old(~pumpRunning~0)| 0))) (and (or (<= |old(~waterLevel~0)| 1) .cse0) (or (not .cse1) .cse2 (not .cse0)) (= |old(~waterLevel~0)| ~waterLevel~0) (or (not .cse2) .cse1 (= 0 ~systemActive~0)))) Eliminated clause: (let ((.cse2 (= 2 ~waterLevel~0))) (and (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse1 (= ~pumpRunning~0 0)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) .cse1 (not .cse2)) (or (not .cse1) .cse0 (= 0 ~systemActive~0))))) (or .cse2 (< ~waterLevel~0 2)))) [2024-11-14 05:03:56,155 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-14 05:03:56,159 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (= |old(~waterLevel~0)| ~waterLevel~0) (or (< |old(~waterLevel~0)| 1) (= |old(~waterLevel~0)| 1) (= |old(~waterLevel~0)| 2))) Eliminated clause: (or (< ~waterLevel~0 1) (= 2 ~waterLevel~0) (= ~waterLevel~0 1)) [2024-11-14 05:03:56,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 05:03:56 BoogieIcfgContainer [2024-11-14 05:03:56,162 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 05:03:56,163 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 05:03:56,163 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 05:03:56,163 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 05:03:56,165 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:03:07" (3/4) ... [2024-11-14 05:03:56,167 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 05:03:56,171 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-14 05:03:56,171 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-14 05:03:56,171 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-14 05:03:56,172 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-14 05:03:56,172 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-14 05:03:56,172 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2024-11-14 05:03:56,179 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2024-11-14 05:03:56,180 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-14 05:03:56,180 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-14 05:03:56,181 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 05:03:56,181 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 05:03:56,309 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 05:03:56,309 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 05:03:56,309 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 05:03:56,310 INFO L158 Benchmark]: Toolchain (without parser) took 50059.16ms. Allocated memory was 167.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 125.7MB in the beginning and 780.8MB in the end (delta: -655.2MB). Peak memory consumption was 661.3MB. Max. memory is 16.1GB. [2024-11-14 05:03:56,311 INFO L158 Benchmark]: CDTParser took 2.09ms. Allocated memory is still 167.8MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:03:56,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 705.29ms. Allocated memory is still 167.8MB. Free memory was 125.7MB in the beginning and 107.0MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:03:56,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.87ms. Allocated memory is still 167.8MB. Free memory was 107.0MB in the beginning and 105.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:03:56,312 INFO L158 Benchmark]: Boogie Preprocessor took 37.72ms. Allocated memory is still 167.8MB. Free memory was 105.1MB in the beginning and 103.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:03:56,312 INFO L158 Benchmark]: RCFGBuilder took 822.79ms. Allocated memory is still 167.8MB. Free memory was 103.9MB in the beginning and 77.8MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 05:03:56,313 INFO L158 Benchmark]: TraceAbstraction took 48262.92ms. Allocated memory was 167.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 77.2MB in the beginning and 789.2MB in the end (delta: -712.0MB). Peak memory consumption was 829.4MB. Max. memory is 16.1GB. [2024-11-14 05:03:56,313 INFO L158 Benchmark]: Witness Printer took 146.21ms. Allocated memory is still 1.5GB. Free memory was 789.2MB in the beginning and 780.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 05:03:56,315 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.09ms. Allocated memory is still 167.8MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 705.29ms. Allocated memory is still 167.8MB. Free memory was 125.7MB in the beginning and 107.0MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.87ms. Allocated memory is still 167.8MB. Free memory was 107.0MB in the beginning and 105.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.72ms. Allocated memory is still 167.8MB. Free memory was 105.1MB in the beginning and 103.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 822.79ms. Allocated memory is still 167.8MB. Free memory was 103.9MB in the beginning and 77.8MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 48262.92ms. Allocated memory was 167.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 77.2MB in the beginning and 789.2MB in the end (delta: -712.0MB). Peak memory consumption was 829.4MB. Max. memory is 16.1GB. * Witness Printer took 146.21ms. Allocated memory is still 1.5GB. Free memory was 789.2MB in the beginning and 780.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] - GenericResultAtLocation [Line: 87]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [87] - GenericResultAtLocation [Line: 96]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [96] - GenericResultAtLocation [Line: 287]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [287] - GenericResultAtLocation [Line: 653]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [653] - GenericResultAtLocation [Line: 725]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [725] - GenericResultAtLocation [Line: 823]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [823] - GenericResultAtLocation [Line: 873]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [873] - 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: 92]: 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 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 38.9s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1246 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1222 mSDsluCounter, 2207 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1782 mSDsCounter, 708 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2935 IncrementalHoareTripleChecker+Invalid, 3643 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 708 mSolverCounterUnsat, 425 mSDtfsCounter, 2935 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 513 GetRequests, 275 SyntacticMatches, 19 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5890 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=472occurred in iteration=6, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 233 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 322 NumberOfCodeBlocks, 322 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 1468 SizeOfPredicates, 10 NumberOfNonLiveVariables, 454 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 111/151 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: 666]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 667]: Loop Invariant Derived loop invariant: (((2 == waterLevel) && (splverifierCounter == 0)) || ((splverifierCounter == 0) && ((waterLevel < 1) || (waterLevel == 1)))) - InvariantResult [Line: 737]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 140]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: ((((waterLevel < 1) || ((pumpRunning == 0) && (waterLevel <= 2))) || (waterLevel == 1)) && (pumpRunning == switchedOnBeforeTS)) Ensures: (((((waterLevel < 1) || ((pumpRunning == 0) && (waterLevel <= 2))) || (waterLevel == 1)) && (pumpRunning == switchedOnBeforeTS)) && (((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 900]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: (waterLevel <= 2) Ensures: ((waterLevel <= 2) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (waterLevel == \old(waterLevel)))) - ProcedureContractResult [Line: 727]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((systemActive == \old(systemActive)) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 113]: Procedure Contract for timeShift Derived contract for procedure timeShift. Requires: ((2 == waterLevel) || (waterLevel < 2)) Ensures: ((((((((\old(pumpRunning) != 0) || (2 == waterLevel)) || (\old(waterLevel) != 2)) && (((\old(pumpRunning) == 0) && (0 != systemActive)) || (((pumpRunning != 0) || (0 == systemActive)) && (((pumpRunning == 0) || (waterLevel < 1)) || (waterLevel == 1))))) && (((pumpRunning != 0) || (\old(waterLevel) != 2)) || (0 == systemActive))) && ((\old(waterLevel) < 2) || (\old(waterLevel) == 2))) && ((\old(waterLevel) == waterLevel) || (((pumpRunning != 0) && (\old(waterLevel) == ((long long) waterLevel + 1))) && (1 <= \old(waterLevel))))) && ((((systemActive == \old(systemActive)) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 888]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: (((waterLevel < 1) || (2 == waterLevel)) || (waterLevel == 1)) Ensures: (((waterLevel <= 2) && ((((long long) \old(waterLevel) + 1) == waterLevel) || ((2 <= \old(waterLevel)) && (\old(waterLevel) == waterLevel)))) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (methaneLevelCritical == \old(methaneLevelCritical)))) - ProcedureContractResult [Line: 200]: Procedure Contract for isPumpRunning Derived contract for procedure isPumpRunning. Requires: (waterLevel <= 2) Ensures: (((waterLevel <= 2) && (pumpRunning == \result)) && (((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (switchedOnBeforeTS == \old(switchedOnBeforeTS))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical)))) RESULT: Ultimate proved your program to be correct! [2024-11-14 05:03:56,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2faef27-ed25-48c2-b955-c9f78d20a3f6/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